Joining the ranks of accepted submitters, Gaygirlie
writes "Michael Robertson, the owner and founder of the MP3Tunes music locker service, has been locked in a copyright infringement case with EMI Records for a while now, especially because of the Sideloading search engine that is tacked along with the locker service. Now the case has been resolved though: EMI Records won. But lost on all the accounts that actually really matter."
The important parts here are that MP3Tunes was granted safe harbor protection under the DMCA, and that merging multiple copies of the same file doesn't make distributing that master copy a public performance.