No they don't! Not unless they are wma or rm format. If iTunes can import them then they can be added to your iPod. I doubt very much you saw the iPod tutorial that I left a link for. Follow that & you should be fine. If you don't wish to use the auto update (which I hate), use the manual option to add new songs to iPod. Watch the QuickTime movie tutorials & you'll see what I mean.

In your 1st post you mentioned a different portable mp3 player. Not all mp3 players import songs the same way. You need to have a particular softw that helps to transport them across for some mp3 players. Read the manual & you'll see it.