MoonShell is a famous multimedia player for viewing videos, listening to music and showing images directly developed for your Nintendo DS.
The variety of files that MoonShell lets you run is very wide. For audio it works with MP3, OGG, MOD, SPC, MDX, MIDI, AAC, GBS, HES, NSF or XM; as for graphic images, it loads JPG, BMP, GIF and PNG; and as for videos, it views in DPG format. It also shows simple text files.
The configuration options in MoonShell are very simple to personalize. Although MoonShell is only in English, you can find help and instruction manuals on the author's website in other languages like Spanish, French, Germna, Korean, Dutch and Russian.