I just got a new laptop with Windows 7 and thought that instead of trying to recover my music from my iPhone, I would just use the Homegroup I have set up to transfer the music from my old laptop. Well, I did that, but now iTunes has decided that all of my apps, but only 3 of my songs (out of the 70-80 that I've purchased) cannot be transferred to my iPhone (even though they're already there) because I'm not authorized.
It will prompt me to log in and authorize the computer (which I had already done).

Once I log in, it will just tell me I've already authorized this computer.

Then if I go and try to play the song, it will just prompt me to authorize it again.
I've searched Google and tried pretty much everything I could find. I've tried:
- deauthorizing -> logging out -> logging in -> reauthorizing
- Reinstalling iTunes
- Deleting the SC Info file
I've got 15 GB's worth of music, which doesn't transfer swiftly. So before doing anything drastic with my music collection, I thought I'd ask around here and see if anyone else had had similar issues, and hopefully found a fix.
