As PSFK reports, MTV-Overdrive is in BETA. It looks like MTV is going to play the music-clips online. All you need is the Internet-explorer and a special plugin called Overdrive Video Optimizer….mmmh, and what about Mac OS and Firefox? Currently no support because the service uses the MS Mediaplayer 9 Codec for DRM which is neither supported by Mac nor Firefox. Hence MTV uses third party content (mostly delivered through labels like Universal,…) I wonder who built this application for them. Does anyone know?