I discovered an issue that hopefully would be resolved in the future.
When looping an audio file, there are noises (ticking, clicking) as the file loops, and continuing in playback after looping.
I scratched my head over this for a while. I tried fading in and out the audio files (perhaps it was looping at a non- zero crossing.
After some troubleshooting I believe the problem lies in the Go Button clock. If you press Go on a cue, then move the slider towards the end of the clip, the clock goes to zero before the audiofile ends. This somehow creates a ticking noise that continues as the cue plays even after looping a third or fourth time.
If I let the cue play from the start to the end of the loop, no noise issues occur.