Although you can try to access geographically restricted sites
How to access BBC iPlayer, Hulu, Fancast, Pandora, any other region-restricted sites

MTV now uses RTMPE protocol. There are no streaming media rippers/recorders/downloaders from which RTMPE support wasn't removed thanks to Adobe:
www.mtv.com: Software or web-site to download music videos from MTV.com

But you can always use screen video capture software for recording RTMPE streams.


Related thread:
RTMPE stream recording/downloading/capturing/ripping/saving