I'm confused. I just wiped my iMac and reinstalled everything fresh. I was having a variety of problems. I've installed iTunes 8, updated my Touch to 2.1, but am noticing that half the apps I have on my Touch aren't showing up in the Applications section of my iTunes library. Past purchases for instance, aren't showing up on my computer and when I click the "buy now" option it doesn't give me the "you've already bought this app, click ok to download again." So, my question is, how do I get my Touch and iTunes app library synced back up?