I've recently only been able to preview the first 10 secs of any songs on the itunes music store. It's always been the full 30 before, and now it stops at 10secs (while still showing 30). It's been like this for weeks, and it's the same on every song and also on my other 2 fast-user-switching accounts. Latest iTunes version (7.0.2) on OS 10.4.8. Can anyone please help?