I just downloaded a few songs on iTunes over Wi-Fi on my 2nd Gen iPod touch. After that, I went to my music library, which said that it was updating. It's never done this before when I have downloaded music. Once it finished, only the songs that I had downloaded onto my iPod over the internet -- not the ones I downloaded from my computer -- were left. The amount of memory left on the iPod is the same that it would be if all of my songs were left on it. Due to past issues with the iPod, I don't think I can connect it to my computer now without deleting everything.
I've had no luck finding solutions elsewhere online. Does anyone have any suggestions? I've tried restarting it thrice already.