I've successfully updated itunes and quicktime on windows XP but itunes won't run properly, the video tutorial loses audio after about 1-2 minutes and when I plug in my iphone 4s to sync the whole thing freezes, any ideas?

Hi everyone,

was prompted to upgrade itunes on my PC and also upgrade the software on my iphone 4s.Went through as usual but took 3 goes to get a successful upgrade of itunes on the PC. Then was prompted to update quick time, this was done successfully.

Thought I'd look at the tutorial video for itunes - the sound went off 11/2 minutes into it, then I couldn't stop it. I had a quick look around itunes and decided to sync my phone. The program recognised the phone then everything froze. Windows message for a non responding program came up and had to pull out of the program. So far after several hours I have not been able to get beyond stage 2 of 7 of syncing the phone; it keeps freezing up at different stages.

Any ideas?? I haven't had this kind of trouble before with any other version of itunes.

Cheers