With everyone's help I have finally managed to burn a BluRay disc. Ray is spot on regarding the PTE h.264 file cannot be read in Sony Vegas and so I went back to using an avi file and this time it actually worked. This is rather strange because that is the way I tried in the first place. Lin. I tried the software you gave me a link to and it did burn a disc but there was no sound. Ron I have produced many DVD's with PTE without any problems but you will need some authuring software if you want to do multiple shows in Bluray. I am also glad I have been using rewritable Bluray discs because there would have been an awful lot of coasters flying about. Best regards to everyone Chris