Currently Being ModeratedSep 10, 2010 2:49 PM (in response to Skytbest)RE: Guitar port not working with itunes
It's a driver issue and it's most likely all on our end. Several people running Windows 7 and Vista have come forward complaining of issues just like yours.
We have engineers working on these issues and a new driver is the only way that these issues will be resolved for some people.
You can try some of the recommendations called out in this video:
If none of those work then I'm afraid I'm not going to be much more help. We have created an announcement (Support Bulletin for Drivers) at the top of the page here:
We will be periodically updating this announcement to keep the community aware of our progress. Expect an update early next week.
I sincerely apologize for the inconvenience.