I only have three folders: one with the GTA installer that a friend brought over last year so we could play online... I installed the game, but I haven't bothered with the online stuff yet)) I don't know, maybe I'll delete it later...
and the other two are just for text files and other documents.
P.S. When I download something, I immediately click on the song (because that's all I download, although maybe you can do the same with other files) and DM opens automatically.