Burned Blurays Playing Video, But Not Audio On PS5

Just started Bluray burning today and ran into an annoying issue: while the movies play perfectly on my laptop in varying media playback programs from the burned disc with no issue, popping them into my PS5 causes them to play the video and subtitles only, with no sound whatsoever. The console’s native sfx work perfectly fine - futzing with the various sound settings in both the disc player’s app and the general console did nothing. Already did a good amount of digging online to no avail. What am I missing?

For context, I converted .mkv files into bluray folders via tsmuxer and am using ImgBurn to burn Verbatim BD-R 25g discs in a Pioneer BDR-XD08UMB-S drive.

Worst case scenario I guess I can hook up my laptop to the TV when I want to watch homemade discs, but I’d prefer to use my PS5 for convenience’s sake!