Music stuttering in WinVista (1 Viewer)

[Stoffe]

Noticed that the music was stuttering when playing mp3 or internet radio. Tried all possible settings but nothing helped. No problem if I used WMP or Winamp in Windows. If I minimized MP, still playing, the sound was flawless.
I deactivated Windows Vista AeroGlass Theme, and then the sound was fine again.
I hope you can use this information to improve MP so that I once again can use AeroGlass.