On my friend's server, I was playing one of my favorite records discs. Then I heard that there was new music. So, I put the music bar up to 100%

And then it happened that my music was playing another track then my jukebox was playing.

This gets really annoying on SMP. Since when somebody plays a music disc, the music of the game itself shouldn't be over it. My suggestion is that when you are in an area where music is played, that is should fade out?