A huge pet peeve of mine is hearing only one channel of stereo music. However, sometimes I want to only put one earbud in my ear so that I can hear what is going on around me while working. So I devised a quick little AppleScript / Alfred Extension to toggle the output for when I switch from mono (one earbud) to stereo (both buds in, rocking out) and vice versa. Really, I just found this AppleScript, added the alfred wrapper, and added Growl support.
