So this has been going on for months now. I've tried tribe houses, music rooms, utilities, everywhere with a TV in the room, but the TV never plays any of the videos/music for me. It just shows a blank grey screen. Pls help!

Are you using the browser version or steam version of transformice? I have found that a friend that uses the steam cannot watch videos while me ((on google chrome)) can easily watch them

I have same problem and yea Google chrome isn't installed cuz I have problems with pc updates and everything, so yea no more fun with friends :( (can't wait for new pc )

You can just download the tfm app instead of steam or google chrome.
It will work there.