Can't add mp4's to iTunes library
Installed iTunes 10.6.0.40 for the first time on WinXP machine. No problem adding MP3's to my library. iTunes will not allow me to add mp4's (tv shows) even with add a file manually. They play on my PC in Quicktime so they are valid files. When I click on my library's TV Shows I just see a white screen with "TV Shows" and directions to to buy or rent from the iTunes store. Same is true for movies. Help?
Windows XP Pro