Hi everyone I have downloaded every costume and extra music from the playstation store just now but I cant choice the costume i have downloaded from the playstation store in both edit mode and empire mode. Do i need to unlock those costumes in the game in order to choice those costume? please advise me if someone can help>.<

No, they should already be unlocked. Did you make sure to install them? They should be somewhere there if you browse through edit mode.

so that means i will find a button to install the extra costume within the edit mode in the game?? thanks for that i will give it a try now. and is anyone know that if i brought a wrong game from DLC, is it possible to get the money refund or get my credits back-.-? i thought there is FIFA 10 ps3 version but i notice that was a psp ones after the download starts at 1 percent-.-a

No I meant install on the ps3 main menu. Once you do that they should just be in edit mode.
As for FIFA, unfortunately you can't get your money back. Once you pay for it that's that.

o no my money-0-
thats really weird about the costume then-.- i cant find anything i need to install after i download everything-.- may u tell me which part of the menu i should choose-.-??