If you trying to record a Dolby Digital 5.1/AC3 Movie from Sky onto a DVD Recorder then the answer is no, Problem is that no current DVD Recorders lets you record anything more than Dolby Digital 2channel as far as I am aware,
This is the case for Panasonic DMR-E20/30 and DMR-HS2 as they only allow Dolby Digital 2channel or Linear PCM 2ch (XP mode).
Movie companies don't want us making perfect copies
There is a way this *should* work, but I ain't got the hardware to do it yet Basically a PC sound card like the Terratec DMX can work in "non-audio mode" which it uses to transfer dts/dd streams unaltered. So it should be possible to record this stream to a file, and get the ac3 sound! It needs someone with a sky+ box and the card to try this out...