I’ll admit it: I’m just too lazy to turn the start knob to search for my favorite sample snippet. Instead, I make Live do it for me. The advantage is that I get loads of variations with very little work.
The first step is to switch over to Sampler (included with Live Suite, or available as an add on).
In Sampler, switch over to the Modulation tab and turn on LFO2. Set Type to Sample & Hold (random).
At the bottom of the LFO2 section, set Destination A to Sample Offset, and crank up the Amount to 100%.
Now the LFO will randomly modulate the playback position of the sample, and every time it triggers you’ll hear something different.