Part of the UI near the minimap: a little music note button. Clicking on it opens up the playlist, which is all of the Spiral Knights music you have discovered throughout playing Spiral Knights (For example, in order to unlock gremlin level music, you have to hear it for the first time at a gremlin level). I don't want to constantly listen to Haven music, yet I feel that a video game should supply its own music (which Spiral Knights / Harry Mack guy does, and they do very well, it is just that we are limited to one music for every one place inside the game).
This way, it can sort of work like more "achievements" and things for us to do: unlock all of the SK musics. Now of course, not everyone really prefers SK musics and that is just fine. I just like to see this as... you find a scenario room, and you unlock special musics. You are online during the Christmas event, you unlock new musics.
Of course, the second paragraph is asking a lot from the music person dude (Harry Mack I think it was?).
"unlock all of the SK musics." <--- You mean songs/soundtrack/BGM. 'musics' just sound wrong.
ontopic: This would be awesome, I'd love to have a little Jukebox to mess with SK's soundtrack :3 *Feels like a DJ*