I tried these days to make a "hold" effect i could launch pressing a key, and stop by releasing it.
I also wanted to quantize the effect to launch/stop it right on time (quite hard when repeat grid of beatrepeat is very small).
So here is the file (Ableton 8 Suite)
http://ableton.deadasdisco.org/files/Ho ... ctRack.zip
Just affect a key to lauch "repeat clip", press it and play with "Grid"
Hope it can help.
Maybe there are some simpler ways to achieve it, so if you find one, please share
Bye