jup, I would vote for totem, since its also the default for all the other audio files. (hint: name it media- not just audio-player, but theres already a bug about that)
but generally any gstreamer based programm can handle muspack, if you have gstreamer0.10-plugins-bad installed... -- musepack is missing https://launchpad.net/bugs/27248 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
