From GameBrew - a wiki dedicated to Video Game Homebrew.
DSMediaCenter is a full-fledged homebrew launcher/movie player.
It was entered into the 2009 NEO Summer Coding Compo and the 2009 best DS Homebrew Contest.
Download and extract file.
Place applications in the apps folder, games in the games folder, favorite NDS files in the favs folder and SMF movies into movies folder.
Copy the folders apps, games, favs and movies to the root of your flashcard along with DSMediaCenter.nds and DSMediaCenter.ini.
To change the paths of apps, games, favs or movies, open up the DSMediaCenter.ini file and change the values there.
To make SMF movies, use the converter provided along with the directions from that folder.
Sometimes after playing a movie, DSMediaCenter freezes.
The icon to "+1" in settings is for some reason is not displayed properly half of the time.
If you play a movie after a previous play of a movie, the sound from the first movie may resound in the current movie for the first second or so.