All right. I'm trying that right now... It's weird. I've successfully burned AVCHDs and Blu-Rays in the past, for example Adywan's HD Releases
EDIT: I just tried using TSMuxer to make an AVCHD. It now plays on my PS3 but with no video... :-( I'm not quite sure if it's just my PS3 being finicky. I may try using TSMuxer to make it into another Blu-Ray, perhaps that will work.