My DVD drive always shows LinuxLive Key

Whenever I insert a DVD into my optical drive, the drive icon in My Computer changes to a file icon which says LinuxLive Key underneath. I've no idea why this is or how to change it back to normal. For instance, it happens when I insert my Windows installation disk into the drive.
I let somebody use my computer to create an AVG Rescue USB a few days ago, it's since then that it seems to have been happening.
Any help would be greatly appreciated.

 

Yep that solved the problem. Thank you, great help.