This is sometimes an issue with laptops. I've advised people to remove the battery for a couple of hours and then reconnect it -- if that's an option with Zune, I don't know (as I'd never voluntarily buy a Microsoft product).
My wife and I each have an 80 GB Zune. Recently we purchased an iHome ZN9, which is specifically manufactured to work with Zunes. A few nights ago she plugged her Zune into the iHome and we were listening to some of the music on it. She then paused it using the pause button on the iHome, and we went about our business for the rest of the evening. When we came back to the iHome we found that it was impossible to resume the music. It was also impossible to turn off her Zune. We knew that we had to let it totally drain the battery so that she could plug her Zune into the PC and let it recharge today.
What I would like to know is, could this be an issue with the iHome? Or is this a known issue with the Zune?

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