Can't play music

It looks like the songs have been transfered to my MP3 player, but when I go to listen to them it says “no song” when I go into the music section…any ideas why this is happening? I’ve checked under playlists, songs, albums, etc and nothing there, but when I hook it back up to the computer, it shows that they are there…wierd, and frustrating. Any help would be appreciated.

Thanks!

Are the ID3 tags for the files filled in? The Clip uses the ID3 tag info. for display and selection purposes.

Are the songs .mp3 or another supported format?