I think most developers do this, but with some of the minis, there is no option to turn off or even down the music. I like to listen to other music when I play my games. Just thought I'd mention it.
For example, the fun game BLOONS has no option to turn off the music. So what do I do? Play it at low volume to still hear the sound effects and then play my music over it. This results in a soft loop of the music that I have to ignore. It can't be that hard to code a simple music and volume slider in all games.