Touch icon and put the phone on silent mode, touch again and back to previous profile. Mute all (ringer, audio/video players, notifications ...) except alarm.
Put application shortcut on wallpaper to quick switch MUTE ON/OFF.

Important note: Please check if required permissions is allowed. Due to new Google policy we are forced to update.

If you like it, please donate this app on:
https://market.android.com/details?id=net.mnocompany.muter