No Sound in WMP11

[ND22]

A week ago I upgraded to SandyBridge so I did o complet reinstall of win, that's means format, install win, install driver sand so on. I have sound in every application (VLC, winamp, games, etc) but not in WMP11!! If I double-click a mp3 the first 5-6 seconds I hear the music but after this it's all quiet. I already tried ffdshow to see if this works and it doesn't. Any help would be great!

As a side note where does vista put the screenshots taken with PRINT SCREEN?

Edited January 31, 2011 by ND22