You should name the MP3-files on your disk in the following format: "Name_of_Artist_-_Name_of_song.MP3"   Because the scan-process will read the file-name and put the artist and songname in the right coloumn.
You can visit MP3 Archive homepage at: http://home.sol.no/~solvberg
You should NOT have special characters like ' or % or ? in the name or path of the song. When importing to the database these characters will be replaced with - .
You can scan a disk with all of its subdirs by marking the checkbox in the scanwindow.
You can play MP3 songs directly from the program but you must have installed an MP3 player.