Castar writes "In a press release today, D&M Holdings announced the end of the Rio brand. Rio had a troubled history, but were responsible for the first mass-market MP3 players as well as more recent popular players such as the Rio Karma. This closing follows the sale of Rio's IP to Sigmatel, maker of chipsets for many audio players, including the iPod Shuffle." From the release: "The company's decision to exit the Rio business followed a determination that the mass-market portable digital audio player market was not a strong enough strategic fit with the company's core and profitable premium consumer electronics brands to warrant additional investment in the category. The original goal of strategic advantage with wholly-owned and branded portable client devices was reconsidered in the context of the costs required to effectively scale and compete in this sector, where competition has grown intense. D&M Holdings will now focus all its resources on the core Premium AV business and advanced content server products."