This app was removed from the App Store.
Mac OS Music
MixTape is a simple, beautiful and easy to learn application for making beat matched mixes.
By simply drag dropping the music you already have in iTunes (or from the finder), MixTape adds detected tempo and beats. Tracks are then dragged onto a workspace where they now "snap to grid" along their beats and play in sync. Precisely in sync. Emphasised markers show where musical phrases start and a simple envelope adds that all important final polish to your mixes.
Mixes can then be exported back into iTunes to play on your Mac, iPod or iPhone; or published directly onto the web with no additional accounts, services or software.
Far simpler than either an audio workstation or a DJ app, MixTape embraces the Mac aesthetic to blend in perfectly with your desktop. Finally a short series of video tutorials emphasise 'show' over 'tell' and creative commons licensed demo mixes both show what can be done and how.
Those wanting a more advanced experience, including the ability to play live should check out MixTape Pro - also in the app store.
Much more energy (and cpu) efficient.
Tested on Mavericks.
Dropping of uncompressed files on icon now works.
Problems with new timing tabs fixed.
Re-importing a tune shows it in the library.