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Inside the RIAA and MediaSentry

Posted by kdawson on Tue Jun 10, 2008 07:20 AM
from the belly-of-the-beast dept.
bsdewhurst sends along an interesting article about how MediaSentry and the RIAA identify file sharers. Since 2003, while the RIAA has been filing 28,000 lawsuits, the percentage of US Internet users using P2P for downloading music has dropped from 20% to 19% (there is no knowing how much of a factor the lawsuits have been). The list the RIAA uses for ISP takedown notices is about 700 currently popular songs that are updated based on the charts, so not liking the top 40 could save you. The list of songs tracked for the user-litigation program is said to be larger.
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  • Numbers (Score:5, Interesting)

    by MichaelSmith (789609) on Tuesday June 10 2008, @07:25AM (#23723545) Homepage Journal

    Since 2003, while the RIAA has been filing 28,000 lawsuits, the percentage of US Internet users using P2P for downloading music has dropped from 20% to 19%
    So the actual number has doubled or something, and the percentage might have gone from 20.1 to 19.9 depending on how it is rounded.
    • by sm62704 (957197) on Tuesday June 10 2008, @07:40AM (#23723737) Journal
      Dropped from 20% to 19%? Samuel Clemons (Mark Twain) said there are three kinds of lies: Lies, damned lies, and statistics.

      First off, how are these numbers generated? Finding out how many file sharers there are may not be as impossible as finding out how many Linux users there are, but how are these metrics obtained?

      Second, what is the margin of error? If there is a +- 4% margin, then the actual percentage could have risen.

      Third, if the total number of internet users has risen by, say 5% (number pulled from a dark hairy orifice) and file sharing dropped by 1%, the actual number of file sharers has risen.

      Fourth and most importantly, not all file sharers are breaking the (civil) law. There are far, far more musicians (and programmers, etc) with files they WANT you to share than there are RIAA musicians. How many file sharers are sharing legitimate content? The corporate media would have you think everything on Kazaa or Morpheus is illegal, when in fact that "fact" is a damned lie.
      • There is also the question of what they consider to be p2p services.

        From the use of such terms as "shared folder" my guess is they're still referring to the archaic gnutella style clients, when bit torrent has been taking over for years.

        I haven't used a gnutella client since 2004, and the last time it was a primary means of p2p sharing was 2002
    • . . . the number of P2P clients that use peer blocking jumped 40%.

      I suspect that the people measuring P2P downloading are the same people being paid to find downloaders. It's in their best interest to show that they're making a difference and should continue to be paid.
        • Re:Numbers (Score:5, Insightful)

          by capnkr (1153623) on Tuesday June 10 2008, @11:40AM (#23728643)
          Actually, it's been almost 42 years since I was born, and despite not being a teenager, I think using the word "MAFIAA" reflects very nicely their tactics, the way that I've seen them to shake people down. I'm no proponent of piracy (even though I *am* a sailor...;) ), and in fact advocate against it whenever I see evidence of my customers having done so when I fix their systems.

          Yet the heavy-handed tactics, their sense of entitlement, their buying of politicians, their often scant evidence turned into a weapon of overwhelming force when wielded by their army of lawyers, and the expense incurred upon *innocent people* to fight these oftentimes spurious claims makes me regard them with no sense of respect, none at all. So my disrespect is shown here in a textual manner by the use of a descriptive and IMO demeaning name.

          Sorry if that sparked *your own* angst there, pal, but I can't help what you choose to get upset about.
  • by queldor (1184789) on Tuesday June 10 2008, @07:26AM (#23723553)
    5 years for 1%. so in 2103 it will be down to 0%. Way to go RIAA!!! That will also be 532,000 lawsuits.. and don't forgot that is IF that 1% was from them..
    • I might just be getting old, but I think that music today is less compelling than it was 10 or even 5 years ago. Seriously, music today is crap. The drop probably has more to do with people not wanting big label music even if they can get it for free over the internet.

      Of course, it should be noted that one percent is much smaller than the sampling error for this kind of thing, so for all we know it could have gone up.
  • by weierstrass (669421) on Tuesday June 10 2008, @07:27AM (#23723563) Homepage Journal
    a complete meaningless statistic.

    The error inherent to measuring something that is 'unlawful' and often frowned upon is far greater than the difference between 19 and 20 percent. Perhaps everyone has simply got better at concealing their downloading of copyrighted material (mp3 blogs, private trackers, etc) or perhaps the effect of the RIAA's grandma-suing onslaught has been that people lie about their online activity more.
  • by east coast (590680) on Tuesday June 10 2008, @07:28AM (#23723589)
    so not liking the top 40 could save you.

    In ways that are too many to count.
  • by slifox (605302) * on Tuesday June 10 2008, @07:29AM (#23723595)
    From the article:

    "There is an idea that we target certain universities," the investigator says. "That is completely incorrect and, technically, not possible. We find what we find by song and through public means; we don't try to get into a university's internal system."
    Who said anything about trying to get into a "university's internal system"?

    The question is more like: Are they only sending take-down notices to certain universities?

    No notices have been sent to Harvard, supposedly because they have lots of money, power, and law professors
  • If these statistics are based on surveys obviously they are going to be low. If I got a survey saying "do you pirate RIAA music over P2P" obviously everyone is going to say no. No one is going to admit to doing something illegal on a survey.

    You mind as well send out a survey asking "do you sell, traffic, or push Illegal Drugs", I wonder what the actual "infringers" are going to mark as an answer?

    Pretty everyone I know has pirated some music. Even the mos moral guys have pirated an album or two because hey weren't able to buy it or just really wanted it.

    So in actual people who have pirated anything in their lifetime I'm guessing its pretty high (50% at least). But people who are casual pirates who download one or two things whenever they feel like it (maybe once a week) or moderate pirates who download stuff whenever they want it.(maybe an album ever 3 days).

    Than you have the serious guys who never have their computer going without downloading something (eg me :P). Especially people with a usenet connection. Just leave your computer running for a couple hours and download stuff.

    I am slowly making a shift to usenet because it has no logs whatsoever. Even if the RIAA begin fighting usenet they aren't going to able to fight the users.

    The battle for usenet will be a big corporation vs another big corporation battle. Considering their are only a few usenet companies and all of them are massive conglomerates such as giganews, usenet.com, astraweb.com (my fav...real cheap).

    So they are just trying to chip away and do some fear mongering. But they will never defeat piracy. It has become almost cultural and most people with a computer have pirated something. Heck i remember when kazaa came out and people would have a computer dedicated to kazaa just because of all the Spyware :P

    Good times!
    • by hostyle (773991) on Tuesday June 10 2008, @07:51AM (#23723869)

      If these statistics are based on surveys obviously they are going to be low. If I got a survey saying "do you pirate RIAA music over P2P" obviously everyone is going to say no. No one is going to admit to doing something illegal on a survey.
      You almost had it right:

      "Do you still pirate songs off the interwebs?"

      A. Yes.
      b. No.
  • by mlwmohawk (801821) on Tuesday June 10 2008, @08:01AM (#23723991)
    In the U.S.A. the public library legally lends CDs, DVDs, and even, gasp, video cassettes.

    Borrow the CD, rip it at the format and audio quality you want, listen to it until you get sick of it, then return the CD for the next person.

    100% legal and moral behavior. That, quite frankly, is the purpose of the library.
  • Bad Taste? (Score:4, Funny)

    by inamorty (1227366) on Tuesday June 10 2008, @08:02AM (#23724021)
    The RIAA should be given a medal for prosecuting people that listen to that charts drivel.
  • Statistics? (Score:3, Funny)

    by oahazmatt (868057) on Tuesday June 10 2008, @08:10AM (#23724155) Journal
    50% of statistics are completely made-up. 40% of all people know that.
  • by viking80 (697716) on Tuesday June 10 2008, @08:16AM (#23724257) Journal
    ... because most people have downloaded everything they ever wanted to download.
  • Method (Score:4, Funny)

    by halcyon1234 (834388) <halcyon1234@hotmail.com> on Tuesday June 10 2008, @09:08AM (#23725195) Journal

    how MediaSentry and the RIAA identify file sharers.

    • Tea leaves?
    • d20?
    • Gut feeling
    • C:\>find pirate
    • Every citizen's name in a gigantic, wind-powered "grab-a-prize" booth?
    • Since they have tried to sue people with no internet connection, and tried to sue people for sharing music they obviously have no interest in....yes

      They don't look for people sharing RIAA members music, they just look for P2P connections

      They are not a government organisation
      They do not represent the music industry
      They do not represent the artists
      They cannot arrest you
      It is not stealing (it is licence infringement)
      It is not piracy

      It is however a crime!

  • Error in the article (Score:4, Informative)

    by Quila (201335) on Tuesday June 10 2008, @10:43AM (#23727225)

    Once they file the suit, the labels may then have the court issue a subpoena for the ISP to identify the registered user for the IP address. That person then replaces John Doe as the defendant.
    That is not what happens. The RIAA drops the John Doe suit once it has the identity, and then sends the person one of their extortion letters.
    • by JonathanR (852748) on Tuesday June 10 2008, @07:28AM (#23723587)

      Put your money where your mouth is and do not listen to it
      I find it's a little hard not to hear the scrunching and gagging sound. The clinking of coins is also a little hard to ignore.
    • by weierstrass (669421) on Tuesday June 10 2008, @07:30AM (#23723601) Homepage Journal
      it is inaccurate to say that downloading copyrighted music is forbidden by law. it is 'unlawful' rather than 'illegal', so the law allows for the possibility of the copyright owner to seek reparations, but does not forbid it whatsoever.
      • by AikonMGB (1013995) on Tuesday June 10 2008, @07:52AM (#23723885) Homepage

        it is inaccurate to say that downloading copyrighted music is forbidden by law. it is 'unlawful' rather than 'illegal', so the law allows for the possibility of the copyright owner to seek reparations, but does not forbid it whatsoever.

        Even this isn't quite right.. Copyright refers to the distribution of a work. Here in Canada (at least for the moment), it is perfectly lawful (and legal) to download copyrighted works, in the same way that it is lawful to use a photocopier at a library. The part that is not lawful is the sharing back of the work to others. At that point, you are "distributing" the work and infringing on the copyright holder's rights.

        • Well, AFAIK the RIAA never sued anyone for downloading. They sued people who "made available" the songs for download by others.

          The waters are muddier, because apparently some P2P programs do (or did) effectively default to sharing anything downloaded right back. (I guess because the whole P2P model wouldn't really work if there were 1 or 2 guys offering it for download, and a few million downloading from them. At that point, you're back to the classic server model, and not in a good way.)
            • "Laws should follow morals, instead of morals following laws."
               
              That is usually true in a democracy. However, look at our current crop of Congressmen, Senators, and Administration officials, and the way money influences them. After Our current grand scheme of government is that "money talks" and everyone else walks.
        • by M1rth (790840) on Tuesday June 10 2008, @09:18AM (#23725385)
          I can't believe nobody caught this one from the article: When a consumer rips a song from a CD and gives the digital file a name, the computer hardware, ripping software and other digital data together create a digital file identified by a distinct hash code. If the user rips the same song with an older computer - even with the same software - the file will have a different hash code. The slightest change in the music source, computer hardware, ripping software, P2P protocol, file name or length of recording will change the hash code identifying the resulting MP3 file. 99% of all ripping software rips the track digitally from the CD and uses lame to encode it, setting up the id3 tag from a free online database. The processor and timing don't matter for shit. I say it's quite easy that 6 guys ripped a CD and came up with the same hash. This is the level of "evidence" the MafiAA's been giving to judges, and they won cases? I wanna know how many whores and bags of cash did it take to buy those judges off?
          • Re: (Score:3, Insightful)

            Wait a sec. I thought that due to things like "jitter" and other factors with CD drives made it possible for the same hardware/software rig to rip the *same* track and yet get slightly different results.

            In any case, I just tested this by ripping a track 3 times on my machine (cdparanoia on a Plextor drive), and all 3 copies have the same md5 hash. Maybe newer drives have special ripping modes that now allow "perfect" CD audio rips. 10-to-15 years ago, this certainly wasn't the case, as I distinctly rem

      • Re: (Score:3, Informative)

        "law allows for the possibility of the copyright owner to seek reparations, but does not forbid it whatsoever."

        So if the law allows me to download songs (i.e. "not forbid it whatsoever"), why should I pay the record companies for a legal act?

        You are trying to show a difference in meaning between 2 words where there is none. Whether you use the word "unlawful" or "illegal", downloading is not allowed under the law. The "reparations" associated with that act are damages and penalties, NOT licensing fees - t
        • Re: (Score:3, Insightful)

          Similar to parking ticket - it's not a fee for the parking space, payable to the state. It is a fine for doing something that is not allowed under the law.

          Call it what you want, I can still park under a stop sign every day if i'm prepared to pay the $35 fee. Oddly similar to paying $18+ to park in a real parking spot, just you pay at the end, not the beginning.
        • Re: (Score:3, Insightful)

          downloading is not allowed under the law.
          Where does any law say that? The law only forbids the distributing copyrighted works and the courts have confirmed that in a number of cases.
      • by mumblestheclown (569987) on Tuesday June 10 2008, @09:12AM (#23725275)
        Let's be really really clear about what you are trying to say, since I think a lot of people will misinterpret.

        What weierstrass is commenting on is the semantic difference between "unlawful" and "illegal." It's an important point in law theory, but quite unimportant with regards to the main discussion here, since regardless of whether it's "unlawful" or "illegal", the penalties are the same.

        What some of you reading this may have gotten hung up on is "but does not forbid it whatsoever" to mean "so go ahead and download all you want without fear." This is simlpy not the case.

        "unlawful" in this case means this: there is NO law that says "Thou art not allowed to tranfer KaiserChiefs-Ruby.mp3 via limewire." In fact, for the most part, "the law" says nothing about mp3 files, p2p networks, ipods, and so forth.

        What the law does lay guidelines for, however, is what constitutes LEGAL IP distribution, redistribution, and fair use. Frankly, if you're reading this thread in 2008 and don't know the four or five US provisions for something to be classified as "Fair Use" off the top of your head, then you have no business being in this discussion - get thee to a wikipedia.

        So, the law does not "forbid" transferring "KaiserChiefs-Ruby.mp3" via limewire - what it does, however, is state the principles and guidelines under which transferring such intellectual property could be considered legal. Since basically all interpretations have found that wantonly sharing this file on a P2P network does not fall under such guidelines, it is therefore "unlawful".

        What does this mean for you? Not much. The penalties and the penalties are the penalties no matter whether it's "illegal" or "unlawful." "The law allows the copyright owner to seek reparations" basically means that if you do it, you can get sued for a lot of money. I'd add to this that it takes very little actual P2P use to cross into the line of CRIMINAL copyright infringement ($1000 worth of material in any 180 day period - I guesstimate that most p2p users exceed this by a considerable margin.)

        If you're interested in reading more, please see http://www.copyright.gov/title17/92chap5.html [copyright.gov] . It's short reading, but worthwhile for anybody who participates in these threads other than to throw up more piracy-"justifying" obfuscation and FUD.

        Oh wait - i said "piracy!" This gives green light for some of you to blather on (incorrectly) about the inappropriateness of the term for copyright infringement and its reservation for high seas crimes. Whew! That sure will get you out of actually confronting the issues.

        • there is NO law that says "Thou art not allowed to tranfer KaiserChiefs-Ruby.mp3 via limewire."
          There bleeding well should be, that song was awful.
    • by cp.tar (871488) <cp.tar.bz2@gmail.com> on Tuesday June 10 2008, @07:39AM (#23723697) Journal

      If you do not agree with their policy, do do not be a hypocrite and still use their product.

      Well, what if it is not their product?

      For instance, what if you cannot buy the songs in question in the format you want?

      Besides, what choice do I have? I live in Croatia, and I cannot access the iTunes store, though I would very much like to purchase some music in a high-quality format. My time is more worth than the meager sum I save by hunting it through various torrents, where I may or may not find acceptable quality both in sound and in tags.

      And, of course, if there is something available free of charge, many people will take it. It may be illegal (though not in the way you imply), but there is more than one way of putting one's money where their mouth is. One of those ways is copyright infringement.

      • by cliffski (65094) on Tuesday June 10 2008, @09:25AM (#23725551) Homepage
        2For instance, what if you cannot buy the songs in question in the format you want?"

        Tough.
        If I'm a plumber, and don't work weekends, you don't have the right to force me to work weekends because that's what you would prefer. As a plumber I sell my wages. if a content producer sells licenses to his work, you are no more entitled to dictate what licenses he sells than you are to tell the plumber when he should work. It's their content, not yours.
        • Look, I've got to use the toilet badly. Could you stop posting on Slashdot and get over here to fix this already?
    • by sm62704 (957197) on Tuesday June 10 2008, @07:52AM (#23723883) Journal
      Whatever you call it, it is forbidden by law, so stop doing it.

      Eldred [wikipedia.org] was a miscarraige of justice. When Congress starts writing respectable laws, I'll respect the law. The current copyright laws are no more respectable than the marijuana laws.

      However, stop sharing RIAA files because sharing RIAA files only helps the RIAA labels! If they didn't want you to hear it they wouldn't allow it on the radio. File sharing is free advertising, and the RIAA is against it because it is as useful to their competetion as it is to them, while they have radio and the competetion doesn't. If you want that new top-40 song, just plug your radio into your computer and "download" it from your radio.

      How to rip from vinyl or tape [kuro5hin.org] or radio, and defeat any and all music DRM in the process! The linked file is an illegal thought crime under the DMCA.

    • by ledow (319597) on Tuesday June 10 2008, @08:03AM (#23724029) Homepage
      1) How do they know it's illegal? Are they aware of every jurisdiction?

      2) Are they aware of the *actual* contents of any particular file downloaded? Some cases have been brought on the basis that the filenames were suspicious.

      3) Are they aware of my private collection of CD's which, in this modern era, are quicker to download than to rip from the CD? No.

      4) Are they aware of my fair use rights, and therefore my ability to exercise them by downloading songs I already have, which has been "approved" by some record labels / artists / courts in some jurisdictions?

      5) Do they bother to check their facts BEFORE filing a lawsuit? Apparently not, unless it's to offer "peace treaties" where people sign away rights (including fair use) on the basis of a promise not to prosecute, even when that wouldn't stand up in a court of law.

      Apparently, none of the above count when they file lawsuits. That's the problem, not them chasing after people copying copyright material.

      So I disagree with their policy. I disagree with many of the lawsuits. I disagree with their tactics. I disagree with their interpretation and publicity surrounding copyright law (the word "pirate" or "theft", for example, when there is no intention to permanently deprive). I disagree with their ignorance of jurisdiction and applicable laws. I disagree with their attempts to strip *existing and well established* rights of my own, on the basis of rumour. I disagree with blanket contracts that people are frightened into signing. I disagree with their pricing policies. I disagree with their segmentation of the market (only offering certain songs online etc.).

      And yet, I'm *trying* to give them bloody money. But I'm not doing anything wrong. And all the methods where I can do this either want to charge me all-over-again for the same songs I already have, or punish me by removing my ability to do so (DRM, FUD etc.). Guess why a lot of people hate them. Guess why a lot of less-lawful people just decide to rip their music anyway and don't care for their ramblings. Guess why "piracy" (Yuck!) is rife and they "aren't making money" (Rubbish!).

      It's all a scam, based on little actual legal content. The big players won't be stopped by a little bit of DRM or their favourite torrent site going down. The only people to suffer are their prime customer market - people who want to pay them for a song, once, and then have their song (minus broadcast, performance rights etc.) for the course of their life.
      • by Z34107 (925136) on Tuesday June 10 2008, @09:21AM (#23725451)

        After reading the article:

        1) They concentrate on college and university networks here in America, and your IP address generally betrays (at least) your nationality. Yes, they are aware.

        2) Sources? You may very well be right, but the article says they download the file themselves and run it through a "fingerprinting" software to see if it matches a song they hold a copyright to. (You know, one of those nifty programs that'll tell you what's playing on the radio.) If it's an infringing file, they record its size and hash and look for matches.

        3) They're probably not aware of your CD collection. But, what in Xenu's name are you doing torrenting an album you already own, when just putting the disc in the freaking drive gets you whatever quality (even Windows Media Player lets you do lossless!) correct tags, album art, and is done in a few minutes? In what case is finding a torrent faster than ripping the actual disc? Do you have a T3 line connected to a Windows 98 box with a dual-speed CD-ROM drive? And has anyone actually been sued for downloading their own CD collection?

        4) Again, why are you downloading songs you already have? And again, has anyone actually been sued for this?

        5) It's called "settling out of court." Our courts prefer it, actually. Now, the RIAA has done a lot of stupid, reprehensible things - but if I just finished pirating a record label, I'd rather spend a few hundred bucks to settle out of court than actually go to court for something I know I did illegally/unlawfully/contrasanguinous kittenous.

        Now, the prices for a new album are pretty rediculous, especially if you only want one song on the disc. $.99 doesn't cut it, either, if the track's DRM'd. I was burned by the closing of the "URGE" music store, and I had to burn/rip my (rather small) music collection onto disc and off again to play my tracks after they shut down.

        I also am a huge fan of Japanese music - but a lot of that's hard to get a hold of without spending $bucks at an importer. (Amazon.com has a surprising selection, though.) It's not like they'll let you into the Japanese iTunes store without a Japanese mailing address and credit card, either - although you can get around that by having someone send you (or e-mail you a scan of) a Japanese iTunes gift card. (Here's the one advantage of our entertainment industry being one evil **AA tradegroup - it's easier to license music. From what little I've heard, their entertainment industry is somewhat more fragmented, which makes it harder for people to license music.)

        What a rant! But two points I want to make - it's still illegal/unlawful/contrasanguinous kittenous to "pirate" music, and it's just stupid if you own the disc. If you don't like it enough to pay $.99, then it probably wasn't worth downloading anyway, was it?

        • Re: (Score:3, Interesting)

          > You may very well be right, but the article says they
          > download the file themselves and run it through a
          >"fingerprinting" software to see if it matches a song
          > they hold a copyright to.

          Out of curiosity, what if they found out through the fingerprinting that it was NOT a song they hold the copyright to, do they then report themselves for copyright infringement? And how large is the fractions of files they download something they don't hold the copyright to? 1%? 50%? Something else?
    • by Anonymous Coward on Tuesday June 10 2008, @08:03AM (#23724035)
      I could agree with you, except that the record industry has shown itself to be more than willing to trample all over other peoples rights.

      I have a memory of the SonyBMG/XCP-debacle, parts of it were about XCP containing source code protected by GPL, but not distributing the source code (http://en.wikipedia.org/wiki/Extended_Copy_Protection#Copyright_violations)

      Also, here in Sweden a record company distributed a CD with seven photographs on the cover. They had not obtained the photographers permission, not printed her name and turned the pictures into black-and-white without permission. As per standard pratice the photographer sent the record company a bill of (approx) 160K SEK (not quite US$27K), but was offered 2K SEK plus two tickets for the bands next concert. (http://www.fotosidan.se/forum/showthread.php?s=&threadid=29644, only Swedish text unfortunately). From the silence from the photographer I think this was settled out of court.

      Further, and also in Sweden, IFPI has published a copy of a newspaper article on their website. When asked about this they answered that they didn't know that copyright also extends to written material (http://www.idg.se/2.1085/1.146198, only Swedish text.)

      When the record industry tramples other peoples rights under thier feet like that I see no major reason for me to bother about their rights, as long as I don't do it for profit.
    • by Eivind (15695) <eivindorama@gmail.com> on Tuesday June 10 2008, @08:08AM (#23724105) Homepage
      I agree in practice: there's no good reason to download major-label-crap anyway.

      But I disagree with the theory; that I should not do something -because- it is illegal. It's not as if laws are infallible sources of moral guidance. There are lots of laws which are flat-out wrong.

      You shouldn't do stuff that is WRONG. You should however apply your own head to the problem of right and wrong, and not let your morals be dictated by whomever wrote the laws of your country.
    • In Australia, I have noticed nothing but an increase in MP3 downloads. It's just such a common thing. Why pay when you can get it for free?

      I mean I do buy the occassional album if it's a smallish metal band I love, and who do actually reap most of the profits, but really, even with the RIAA's ridiculous amount of lawsuits, it's still a tiny percentage of the whole 'music piracy' community.

      Most people at this age are like that.

      ~Jarik
    • Have you heard of civil disobedience? If you don't believe a law is right, you just don't obey it, but you bear the full extent of the consequences of your actions. The theory is that your disobedience, if justified, will potentially lead other people to follow your example eventually either creating a political trend that can no longer be ignored, or by creating a status quo which renders the law de facto obsolete. Sponsored by Ghandi and friends.
      ----
      Left Wing: Poor people stealing from the rich
      Right W
    • Re: (Score:3, Insightful)

      Tell that to Tanya Andersen [blogspot.com].
        • Gone over to his neighbor's garage in the middle of the night and made a copy of his car? Oh Noes! PIRATE!!!11
    • Re:Hash value? (Score:4, Informative)

      by J_DarkElf (602111) * <jordik@NospAm.gmail.com> on Tuesday June 10 2008, @07:59AM (#23723965) Journal
      Assuming they're talking about something like MD5 hashing here--

      Two rips of the same CD music track do not necessarily lead to the exact bit-by-bit identical MP3 file. Thus the hash is different, even if the same software, same CD, and same settings are used.

      Two people with /exactly/ the same MP3 file will have the same hash. /Exactly/ the same, so if person B has added or changed ID3 tags, the file will already get a different hash.

      There are other identification methods for music files, such as the one used by http://musicbrainz.org/ [musicbrainz.org], which /will/ provide the same hash for the same track even if it was ripped with different settings or on another computer. But from the article this is not what MediaSentry uses.
    • Re: (Score:3, Informative)

      Both statements are correct. In the former, however, one of the inputs may be some function of time: time since power on, date, etc... Actually hash functions encoded in this manner, are intended to be unique and are equivalent to GUIDs.
      Actually there's a little bit of loose terminology. I expect that Wikipedia is talking about true hash functions which are really short cuts to otherwise complex algorithms. LimeWire on the otherhand is really using GUIDs and the main requirement is that they are globally un