Ok, i see now what is happening.Here is my log - with wrm9 disabled (-> no picture)
When you disabled vmr9, g_player is instructed to play an AudioStream.
With the latest changes i did, this will result in BASS being used, instead of WMP9 and therefor you'll have audio only.
This is clearly a problem of GUIMusicVideo only.
I'll have a look and fix it