Sound Hangs in [CLIENT]

Any buttons or client sounds sometimes "hang" after they should be finished. For example rolling over the "play" button in client creates a little blip sound. 80% of the time this is normal, but occasionally the sound doesn't end correctly and is left hanging with a single tone playing. This note will hang until I click another button or roll over something else that should make a new sound. The most annoying time this happens is going from the champ select into the load menu. If the hang happens then it'll last the whole load until the in game sounds occur, in effect canceling the hang.

Does anyone else have this happen? It does it with any audio output on my comp (headphones, speakers, etc.)

I'd love for a fix.