#2
If you're on Vista, you might need to click Run as Administrator, though that's usually for things like Live Messenger and CCleaner.

Try uninstalling and downloading it again.
#4
Press Ctrl Alt Delete

Then, go to processes

Then, close any iTunes that are open (there are probably more than 1)

Then, re-open it

PROFIT!
My Old Progressive Metal Band:
Acrasia
For fans of Between The Buried and Me, Dream Theater, Cynic.

My New Progressive Rock/Djent Band:
Wings Denied
For fans of Deftones, Tesseract, Periphery, Karnivool, Cynic.
#6
Quote by silhouettica
Press Ctrl Alt Delete

Then, go to processes

Then, close any iTunes that are open (there are probably more than 1)

Then, re-open it

PROFIT!

+1, that's happened to me before too
Songs!
Something's Changed
Frost

BC Rich Mockingbird Evil Edge
Dean Palomino Vintage Sunburst
Indiana Scout Acoustic in Sparkly Blue
Kustom Arrow 16DFX, soon to be a Vox Valvetronix 50
Dimebag Custom Crybaby
Fab Tone