Plane and simple lol.
The music the game already has is relay old and even starting to get a bit annoying to hear it so much(namely havens music because I spend a lot of time there -.-}. It would be relay nice if the game got some new music so we have more verity .
I don't know why they don't add moar m00sic, relay. I mean relay.
Joking aside,
Multiple haven themes, less-looping haven tracks, or something like that, would be nice.
Or, you could simply turn your volume off in the options menu, press Alt + Tab, open up iTunes, press "Play", re-open Spiral Knights, and enjoy.
~Sev