I have a Blackberry 8800 with a 128mb media card, and I want to play music that I have paid for via itunes.

I have copied these files to he media card via the desktop manger (where I can see my media card), but they do not show up when i look on the blackberry?

Do I have to convert my ipod songs to an mp3 format to be played and seen on the media card on the blackberry 8800?

Thanks