Hi Paul
Have you had any luck with the lip-sync issue? I have just got around to playing with the ARCHOS and have ripped a DVD to it - on playing it is fine but, if I fast forward to a later part of the film, when it restarts the image pauses momentarily while the audio continues which leads to 2/3 seconds of delay between the two - which is way beyond acceptable!

Haven't had a chance to play it through non-stop, but the first few minutes seem fine as long as I don't fast forward/rewind while watching - which I don't necessarily need to do, but which isn't ideal.....
Had a look on the ARHCOS website, but they suggest switching the device fully off and then on again and, if this doesn't solve the problem then contact their technical helpline......so not very helpful.....
I think the file I used was slightly larger (resolution) that it should have been, so will try reducing some of the parameters in the file to see if that has caused any problems, but was just interested to see if you had solved your problem?
Cheers

Mark