I bought a bluetooth audio receiver from amazon for $20 and plugged it into the mic input of my computer. Then under audio devices and recording devices I selected “listen”. This causes any audio in the mic line to play over the speakers even while other sounds are playing.
After that its just a matter of using an ipad with bluetooth audio linked to the bluetooth receiver and players can trigger sounds from soundsets, I just ask them to only use the Pathfinder Character sets (hopefully with the creator we can give better curated lists).
Pretty simple, but now I can let my players trigger combat and spell sounds without my needing to divert my attention.