If you know of a Vorbis player that's open-source and runs in integer-only (no FPU) under Linux on an ARM processor, let us know.
As it stands right now, Vorbis is not one of the supported file formats. There have been a lot of good things said about the format, but before the empeg folks can work on including it, they need a decoder that meets the above requirements, and they need it to be a "popular enough" file format to make it worth their time to include it.
Personally, after reading the things I've heard about it, it sounds like a really good file format and I'd like to see it supported on the Empeg as well. I'd probably even go to the trouble of re-encoding my collection in that format, since the tests I've read say that it has the fewest artifacts.
Of course, there are no other portable/car players that support Vorbis, either (as far as I know), so if they did add it to the empeg, they'd probably be the first.
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Tony Fabris