I have a Creative Rhomba Mp3 player, which has been working fine for about a year now-- but for some reason I'm unable to play music that I've legitimately downloaded from mp3 pay sites. The tracks are in wma format, but I've checked and the player is compatible. Also, the licence for the tracks allows for them to be transferred to portable devices. The tracks can be moved over to the player, but it just skips straight over them. This is probably a very basic issue, but I can't work it out. Any suggestions?