even if you have a perfect seamless OGG file selected, it still has a noticeable pop and cut out every time it repeats. kinda ruins the whole thing 
Steps to Reproduce
select a looping ogg sound
What I expected to happen
seamless loop
What happened
not seamless, abrupt cuts.
Current Workaround:
Using a timer to stop at a different point can sometimes sound better.
I believe you should be able to use timers that loop two of the same sounds over each other, and have them fade in/ out into each other. that could fix it. I may try it.