Try Firefox or Chrome, or just download the Windows version instead, which is what I recommend.
i'm using Microsoft Edge App on My Xbox One i cant use Firefox or Google Chrome on My Xbox one i apologize by this Michirin
I'm surprised that even works...But yeah, the browser has to be compatible with .ogg files, if not then there'll be no sound, sorry that's just how the engine works, there's nothing I can do about it...