Thanks! I got it to work the way I wanted.

The problem with SetMixer MUTE was that I could not get it going again with Shell commands. But I got the exact same effect by writing "SetMixer OUTPUT VOLUME=0 >NIL:". After that I also made a "SetMixer OUTPUT VOLUME=100 >NIL:", plus the volumeadjust parts above.

This is going on my blog

@igracki

Sorry It's a really neat program I must say!