It seems that some people were not able to listen to tonight's game but I was lucky enough and so I'll share with you my success story:

Browser : I use FireFox for almost everything but for Hibs TV I have to use Internet Explorer.

Logging In : I logged into Hibs TV using my normal login.

Playing Media : When I clicked the link it prompted me to "do something" with the media file and I selected to Play it. Then I had to download an upgrade (for Real Player I think, it wasn't too clear). I clicked the link again and selected Play and was then prompted for my username and password for the digital right management (DRM). I used my Hibs TV user/pass and then the audio started.

I've always found accessing Hibs TV to be a little clunky. By clunky I mean having to login multiple times. I don't know if I have two accounts and was confusing them or something else but it seems to be OK for me now.