Magic Audio Joiner is an mp3 joiner, audio merger, wav joiner, wma joiner, m4a joiner, ac3 joiner in one! You pick the files or folders that you want to ac3 join and arrange them in the order you want. Metadata for each file includes track number, artist, title, album, year and genre. The output options allow you to insert a period of silence between each song. You also pick the output format: mp3, wav, wma, ogg, ac3 and more.