I'm not creating tracks. Here's a summary: I purchased a 5.1 24/96 download from Acoustic Sounds of The Firebird. I opened the zip file and then sent it to DVD Drive, which copied the file to disc. That disc plays on my OPPO without a hitch, gaplessly; but, play from Sony is not right. Although there is no gap between tracks, the tracks bump, which produces a momentary distracting sound from track to track. That's it. When I set up the Sony I could swear that there was a "gapless" setting but now when in set up mode I can not find such a setting. What I am thinking is that perhaps a software update eliminated the feature.