You are not limited to music that is purchased from the iTunes Music Store on your iPod.
It will play tracks in a number of formats, including MP3. If your music has not already been ripped, then the process is even easier for you when you use the iTunes software. Just rip into iTunes and out to the iPod. The iPod needs video to be in a certain format but there are various, free, programs that will convert your video into a format suitable for the iPod.
Hope this helps a little
I'm in the UK and thinking about getting an iPod (the 30GB one with colour screen) and was wondering if there are ways to put music ripped from my cd collection to the iPod or am I restricted to only being able to listen to music downloaded from iTunes.
Also can you transfer files in say .avi, .wma, .mpeg, etc to the iPod?
Any help would be greatly appreciated.