Currently you can select a sound sample in a sound cue and select the sound wave you wish to play as well if it's looping but what is lacking is the ability to set the in and out time of the loop so it will only play the set selection.

A lot of our sound samples, weapons mostly, have variations of the sound sample with in the same wave file, indoor outdoor silenced ect, and with out an in and out time have to be broken up into single samples.