[mvdaat]

I believe I've seen some documents it's not yet supported under linux because FFmpeg is not supporting it yet (I can't found any status on their website about wmapro)

Can some give me a status about this?
Because a lot of high quality movies are now using it

[Clumsy]

I know ffmpeg had a google summer of code student working at implementing wma pro support - not quite sure how far he got, but I recall it being quite far last time I checked. Until that is included upstream and xbmc has updated to a version with it included, you will probably have to wait.