Music started to play in game, and still continued to play very quietly after I turned it off in the options.

-music was playing before I turned it off
-when I turned it off, the same music played as before I turned it off, but it started from the beginning of the song
-in 14w30a, the music seemed louder then in 14w30b, but was turned off in both
-music didn't play when i started minecraft with music already turned off, only after i turned it off and continued to play