I have created an application to speed up beats in Serato (it probably works in Traktor too). I originally did it for myself, but since XXX's Speed Booster got some popularity I thought some people would find it useful too.
Downloads (only for mac right now), videos, screenshots and info in
http://www.byowaves.com/SpeedBooster/
If enough people request a windows version here, I will make the release for windows too.
More info:
Byone’s Speed booster is an automatic pitch shifter for Serato Scratch Live (also works with any software that accepts MIDI input).
This application is made for DJs who are practicing scratch techniques and want to improve their speed. The user specifies a start pitch, an end pitch, and how much time they want Serato to transition from start to end.
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