I would like to make a DJ software like the Traktor (Native Instrument) by Max. I have just built a playback system using groove~ and waveform~, but facing a problem what I could not. What I want to do is,,,,,

1, Change a playback speed in real time while playing a tune. 2, Show up the BPM as soon as you replace a audio file onto buffer~. 3, Live scrolling waveform~ display http://youtu.be/dag6g_xQ0Qs?t=1m19s 4, Auto tempo sync mode for different audio files 5, Looper function http://youtu.be/dag6g_xQ0Qs?t=3m29s

If someone genius don't mind share patches or references (links), please drop your comment here.

Best regards,

M