A person has showed me this, and I think it's awesome:
A Bouquet of Flowers for a Magical Girl
This made me tear up...
Also, I found this:
Mahou Shoujo Madoka☆Magica Music Collection
This is a music compilation of the Madoka Magica OP-ED and BGMs that have been arranged by nicovideo users (
Note: these songs are not leaked from the real OST, which hasn't been out yet. These are done by the fans). If you go to read the comments of the video on youtube you can find the download links for the songs.