The short answer is no.

The long answer is no as well but I'll explain why The main problem from what I remember is that you can't record the tuner output without also playing it at the same time.
Pausing would basically involve you recording everything to the HD (which isn't writable apart from the dynamic data partition so you'd need to hack together something for that as well) whilst you're paused. Once you resume then you have to continue recording since you're out of sync and also playback the stored stream at the same time.