There were rumors that this was actually going to happen, or rather, that they would permit a third party to do so. I suspect this was just vaporware to stall more anti-trust action, though. MP3 is a streamed format. The problems are that MP3 is too bandwidth-intensive for your average Internet connection, and it has no facility to dynamically adjust the bitrate based on connection quality. I would think the same properties would apply to Ogg Vorbis, although I do not know for sure.
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