Seamless Looping Background Audio?

I would recommend using one of the Soundy plugins.
https://www.ads-software.com/plugins/soundy-background-music/
https://www.ads-software.com/plugins/soundy-audio-playlist/

Thanks for the recommendation however these plugins pause before looping. For example, I need to play a 10sec audio clip to play for hours without noticing any intervals.

I’ve never heard a “clip” play in a loop without some kind of brief pause. I think to avoid the pause you will be looking at an audio stream. Whatever server side script that generates the stream could work from a finite clip source, but the output is a continuous stream. I don’t know of any specific way of doing this, but I’m fairly confident this is the direction to pursue, as opposed to a finite “clip”. Good luck!