I've heard of Itunes...though thats a weird problem...
Anyway...if you don't have an ipod...why are you using doftware like that? I mean, I posted a great link for a great music player that I really like on these forums, which has a radio function too
Though to fix the problem, do a full uninstall and not repair...it seems it has corrupt somehow so even a repair isn't possible (it needs the files to at least be there to work), so do a full un-install, restart, and then download it again from the internet and simply install it again.
I hope this helps