Mmmm I guess you’re right this probably wasn’t the place to have made this post as it’s obviously a Roku problem, looks as though its ramifications are rather relevant to Firefly users though, as Ron said, he’d have been disappointed if he were in my situation. Thanks for the responses, I had wondered if it was an upsampling issue as I couldn’t think what else would have caused this problem, other than extreme jitter maybe. As I have the NSLU2 with Firefly on it I may well order an M1000 from Amazon and see if that over comes the problem. If I do I’ll let you know the result.
Phil.