The above is an example of mdb's main window. This is from Linux. The Microsoft Windows version is similar but more three dimensional. The Apple OS X version has the same layout but is in the Apple style.
mdb's main window has two subwindows. The left one shows the playlists. At first execution, it only contains the library. This special playlist contains all scanned tracks. It is always the first playlist. The other lists in this window can be renamed and moved with drag and drop, but not the library. Tracks are entered in the library by scanning the disk for media files.
The window on the right contains the tracks in one playlist. To select the playlist tracks displayed in the right window left click on a playlist in the left window.
Scanning for media