Synthshit

 I saw this on a FL Studio video & immediately had to look up how to do it in Ableton. So - Take a slice of a long sample, lets say 4 bars. Now, holding CTRL & SHIFT, left-click drag on the wave form and you can slide the audio about!

To avoid latency, use the External Hardware Instrument device. Drag it onto a midi track. Generally, record the audio to a seperate audio-track, then disable the midi once you're done. Preferably record pre-fx, so you get a nice dry-signal. A loop note/trick -When the loop first starts, any reverb/echo will not be present. This can be weird, so it's worth recording an extra measure to use . Eg if your loop is 4 bars. Record 5 bars. Ableton can be configured to start at bar 1, but use bars 2-5 for looping. This way you get both a natural start and a natural loop.