thatwendigo said:In a word: no.
In a longer explanation:
Microsoft seems to be dragging their feet on letting anyone else in the MMV3 codec, because it's their DRM-laced one that they want to use to get people locked in on Windows. I don't expect support for it any time soon. You're basically out of luck if you're not using a Windows machine that's new enough to install the latest WMP and using XP.