I have trouble receiving a live video stream from www.butterstone.tv

Trouble is it's a once a month live concert so there's no way of testing whether you can receive it in between times. There are recordings on the website and I can receive these fine.

I usually try connecting a laptop to my TV and watching from the comfort of an armchair, however when it keeps freezing and stopping altogether and not coming back until I refresh the page then log in again, then I resort to my desktop PC upstairs. however last month even this didn't work and I saw about 10% of the programme.

I really can't give any details about the type of feed from the website etc, but are there any basics I can try? The next concert is 10th January this Friday.