A few folks have asked me: how do I erase all the content off my Zune? Let's say you're giving your Zune away to your friend. And let's say your friend has completely horrible different music taste. Here's how to easily clear everything from your Zune. Warning though: this will definitely erase all your content. All your pictures, photos, videos, everything - gone. Ok, still with me? Good. Here's what you do: 1. Set the Hold switch to unlocked. 2. Press and hold the Back button...