Cool. I'm interested in programs like this, having made a small .jpg player too
Here. Mine doesn't have the nice graphical controls like yours. Your menu with thumbnail is nice, and I like the controls with progress bar at the bottom. QB64 has some nice sound capabilities too, so adding audio with the video would is an easy addition. I found that the .OGG sound format to be the best compromise with space and sound quailty, so that's what my player used.
Thanks for sharing.
- Dav