Hi Dave, My media player is in my DVD player. It has an USB port and I have played MP4 slideshows with that. But they where all automatic. I can play an automatic MP4 show with the play and pause button of the remote control. I tried to make this MP4 from a PTE file that has all the slide durations set at 10 sec. I had also ticket the box, "wait for key press to show next file". When I tried to make the MP4, the video builder freezes, and I have to force shut down the computer. I tried the same file with the box "wait for key press to show next file" un-ticket, but the video player froze again. When I go in the task manager, every time there are 2 media players shown, and both say "Video Builder not running". I have made many MP4 files from PTE shows, (never from a manual show) and had never any freezing before. There is no zooming or panning in this show, only a few different dissolves and two music pieces with the sound at zero procent. I am going to take the music out at my next try, as it is not necessary. Regards, Bert