What advantages does this have over Plex, mpd and Ampache?
Here's a video of v0.1 of mStream Express being setup in under a minute: https://www.youtube.com/watch?v=IzuxYTaixpU
However, your statement is an `alternative fact` at best, and I am being generous.
Instead the webapp falls back to using aurora JS for codecs the browser doesn't support. This was mto support flac, but now browsers are starting to add flac support so it's not really that useful anymore
The audio streaming service is a pretty crowded market though. You could ask 10 different people to list their preferred solution and get 10 different answers.