I have a PinDMD3 display and just replaced the "No Real DMD Color.avi" file to a custom video file. It plays flawlessly, although without loop. So the video stays still after the last frame and doesn't start again.
It would be nice if the loop play could also work with .mp4 videos, so I don't have to convert it to .avi (where the loop works).
Besides that - best front end in the world :-)
Cheers,
Timo