In-game music player
There should be an in-game music player that allows you to choose between certain songs depending on the champion and skin you have. I think that'd be cool, because I really don't like the map music lol
Say you're playing Dunkmaster Darius. You'd get access to standard map music, classic map music (if you're on Summoner's Rift), his login music, the skin's login music, and if they'd create it, a Noxus theme.
That way, we'd have a variety of tunes to listen to. In my opinion, music is a big part of this game and should be treated as such.