How can I edit one long song on Garageband, to make it several separate songs?

I made a podcast the other day on Garageband. I just put together a few songs so they don’t have a gap in between them like they do when you burn a CD on Itunes. I put each song as a separate track, and they seem to all come together to make one really long song (a bit over one hour). Is there a way I can break it up; like separate tracks on a CD? This way I can skip over a song if I want to, and not have to blindly fast forward through it. If not on Garageband, is there another software I could use? or something recommend?
Thanks in advance!