It's not an OS issue, it's an implementation issue!
Chris, fair enough, I get your point, but it's not entirely addressing my point.
Also, I feel alot of the other posters are missing the point.
Of course, if you are a commercial company, testing a beta, or doing a rollout, you can rightly test to a smaller audience, or any audience of your choice.
That's not the point. The point is that they are taking the wrong route. Especially as a public company, they should be using an open source DRM solution, if that have to use DRM at all.
Although not specifically said, I assume some people have flung me into the Linux camp. - I don't use windows, linux, or a mac, but this helps prove my point - this isn't about providing a version for specific systems, and I'd still have the same opinion if they made a version for "my system" using their current methologies (and, I'm not an anti-binary, open-source only zealot - I happily run binary-only programs)
The point is, as has already been mentioned, there ARE opensource DRM possibilities - in fact, probably more secure than the closed 'security by obscurity' models.
Simply restricting in the way they are is not the way to go.
Now, if they were doing this 'the right way', yet still, the only working version was for windows only, I'd not be moaning, I'd patiently wait until an alternative worked on my system - well actually, I'd probably not bother - I don't watch TV anyway!
But the point is, it's not the current availability, it's the closed way it's being done.
As for Neil, I understand that there was an attempt to legalise home video off-air recordings for 28 days, because it was (and is) actually illegal to video anything off air at all!
However, from what I understand, the law was never thrashed out as workable, so it's still technically illegal to do at all.
The whole DRM thing is stupid, anyway. If anyone wants to record and distribute these things, they'll simply record an off-air broadcast which would be of much better quality (especially a digital recording directly from a digital feed) - if they want to restrict this thing, there is no point trying to do anything more than restrict the service to UK IP addresses via Uk participatring ISPs
(apologies for incoherency, need coffee)