Thanks for your suggestions, iskarion and ism.

I am able to get the asx video, but it's relatively crude-looking and tends to randomly quit, plus I can't click on the time-scroll thingy to jump to another time (it's greyed out) ...

I believe one of you is correct (can't remember which!) ... I think the Look North site has changed its video format slightly. I say this because I can view on my laptop no problem, but my N800 has problems as we've discussed, and now my 770 won't open the file (it says my 770 doesn't have the ability to view the video). What's annoying is that another Look North (each is local news for an area of Yorkshire) video stream still works fine. GRRR!

Any further help would be greatly appreciated!