Create a simple jukebox.
Perhaps a juke box that plays army bugle calls (bugle-calls.zip)?
Create a video player.
Combine projects #1 and #2.
Modify the jukebox program so that music/video files can be added or removed and the music/video list is automatically adjusted. (At jukebox start, create a list of the music/video files that exist?)
Create a GUI for the program.