On the album page, there will be two songs that have a black or red box next to them. If they are red and say "Explicit" then you bought the PA version. If they are black and say "Clean" then you bought the non-PA.
I don't think I can put that any more simply.
It's really short. It's worth a play, but the controls can be tedious at times and it doesn't offer much replay value. If it hadn't been a Linkin Park game, I wouldn't have bought it.