iPod Computer Authorization Issue

[Spulture]

I've never actually had a computer of my own, so I've authorized computer-to-computer (some of these computers have broke) and now I cannot sync a couple of games I purchased to my iPod nano because I've used up my limit of 5 computers. I also lost $10 worth of games on my iPod when I synced it, and now I can't put two new games on it. Does this mean I lost $20 worth of content, or can I retrieve the two games I bought, plus the two more that I recently purchased?