Ask the DJ, an mp3/AAC mix engine for Mac OS X

AccuBeatMix: beat match & mix plugin for iTunes

BPMer: batch BPM detection. Buy Ask the DJ and get BPMer for free!

Ask the DJ:
the perfect automatic mix engine for your parties!

What is that song? Tunatic tells you. Freeware!

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Ask the DJ's many exclusive features make it a powerful, yet very easy to use mix engine:

Ask the DJ detects tempo (BPM).

Ask the DJ automatically detects tempo for all tracks in your play-list. You don't have to manually “tap” with the keyboard: Ask the DJ analyses the tempo from the sound track itself. This analysis allows Ask the DJ to match beats perfectly and automatically when mixing tracks.

Ask the DJ detects intros and outros.

Ask the DJ automatically detects and skips intros and outros for all tracks in your play-list. The beat never stops at your party, even when Ask the DJ is running unattended.

Ask the DJ uses pitch-preserving time stretching.

To match beats when mixing tracks with different bpms, Ask the DJ gradually alters the tempo with a special pitch-preserving time stretching algorithm. The music gradually runs slower or faster, without the pitch being affected. To alter the tempo, other software merely “pitch” the sound, which results in unpleasant key shift.

Ask the DJ optimizes your play-list.

Ask the DJ automatically analyses all tracks in your play-list. If you click the “sort” button, Ask the DJ rearranges your play-list so following tracks have matching tempos, rhythms and volumes. You can even assign weights to each matching criterion.

Ask the DJ indexes your music library.

When it's launched, Ask the DJ automatically indexes all your mp3 and AAC files on all your local volumes. This makes it very easy and quick to add a new track to your play-list: you just need to type a few letters of the title, the artist or the album.

Ask the DJ exports mixes.

Ask the DJ can export the mix it produces to audio files suitable for playback and other manipulations in other applications, or for burning audio CDs. You can now prepare compilation CDs with seamless transitions between your favourite songs!