I think 2 downloads is an easy solution for the problem. If you have tons of installs, you likely aren't playing the full game with each one, so having music in them is greatly not needed. So, having a "Regular Download" including music (I'd drop the videos, since they are kinda big, and not really as influential as the music on gameplay) and a "Slim Download" for the rest. Mind you, it wouldn't be a bad idea to add the new netfix patch and maybe a few of the custom maps in it aswell. And hell, if you really are into it, in the additional download section, you could even a have a version with nothing but the base game, excluding all maps and sounds, lol.