Where does iTunes Match store songs on my iDevice? I know in a regular situation (without iTunes Match), the music is stored in /User/Media/iTunes_Control/Music. However, all of my FXX folders are empty. Does iTunes Match cache files in a different location than the regular iOS iPod storage place? 

I am running iOS 5.0.1 on iPhone 4S.

Edit: I deleted all my FXX folders, and my entire Music folder and my music still plays. Does anyone have an idea how I can find where these songs, and/ or a database file are downloaded?
look at

/var/mobile/Media/Purchases/