Epic image XDD
Exactly what osts do you have?
I have some Sonic Generations osts, Shin Megami Tensei IV on my mp3... on the pc I also have Aqua Kitty, Kingdom Hearts, The World Ends With You, Electronic Super Joy.... and so on XD
From Sonic I have lots and lots... My favourites are the one from Sonic Generations ('cause it has remixes from the best musics of Sonic), Sonic the Hedgehog "2006" (Horrible game, wonderful soundtrack) and Sonic R (basically, the game which make me like pop music).
I also have some musics from Rayman Origins (they are so funny =) ), Pokémon (mostly from White/White 2), and also some of songs from old Super Mario and Top Gear games, which I use as ringtones on my cellphone. xD
From the games which don't have original soundtracks, most of them are racing games like Gran Turismo, FlatOut, Burnout and Need For Speed series. I also enjoy a lot the soundtracks of the FIFA games, you can say that FIFA is boring or that you prefer PES, but you must agree that FIFA always has awesome soundtracks.