RealNetworks has fused its Jukebox music organiser and its Player streaming product together in a new offering, RealOne.
Taking on Windows Media Player, the platform has won the promised support of 150 of RealNetworks' existing content providers.
Recent data from researcher Jupiter Media Matrix shows 24.7 million Windows Media users, compared to 24.4 million RealPlayer fans.
Analysts said the move was the right way for the firm to make a proposed switch to a subscription model attractive, rather than simply charging users to upgrade.
They said it was an aggressive move against Windows Media Player. Users will be able to use RealOne to access the online music service MusicNet, which RealNetworks has a share in.
Rob Glaser, chief executive at RealNetworks, said: "By combining the many ways that people enjoy and interact with digital media, and by steering use of the internet toward integrated, compelling audio-visual content, RealOne will fundamentally change how customers and creators of content relate."
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