Autoplay Audio Files Using Loop and Merge

Hello,
I am running an experiment where I need audio files to autoplay without a participant being able to fast forward, rewind, pause, etc. (I.e., autoplay, autostart, no controls). This files need to be randomized, so I am using the loop and merge function. Here is the code I am using:

This code does not work - the audio files will randomly appear, but I am able to pause/play, move around the progress bar, and they do not start playing automatically.
My colleague has used the below code for her video files, which autoplays the videos without the participant being able to manipulate them.

When I try and adapt it for audio files, it still doesn't work.
 

I could really use some help. Thanks in advance!