A little known feature to those that don’t use a Microsoft Zune is the fact that Zunes have the ability to “reverse sync” back to a computer. What this means is that you can connect any Zune to any PC running Zune software and copy over music, videos, or pictures back to the PC. Matt recently blogged about this over on ZuneInsider when he surprised a friend by showing him how to he could copy an album from his friend’s Zune back to his own PC. He notes that he already owned the album in this example, but the secret here is that un-DRM’d content – like much of the content sold in the Zune Marketplace as well as on sites like Amazon’s MP3 store – makes this possible. With less restrictions on how the content can be moved around, accessed, and played, you aren’t as locked down as when you purchase DRM’d content like the majority of the music still sold today on iTunes. Not only is this helpful for letting friends share music with each other, it’s also a great feature for anyone with a multiple-PC household and more than one Zune or for taking your tunes to your office PC. For step-by-step instructions on how this is done, check out Matt’s post.