i have a love-hate relationship with my favorite radio station. love because they have good talks but hate because sometimes they mix music I like with commercial dance crap that I hate.
Many times I put the pc on mute but then later I forget to unmute.
As a song only has few minutes, it would be awesome to press a special mute button or right click on systray and choose a special mute option, that would mute then automatically after 2m:30s would release the sound.

BONUS: it would be BRILLIANT to detect when song ends and automatically unmute. Libraries appear to exist for this http://stackoverflow.com/questions/477944/bpm-audio-detection-library