This Problem is not caused by any mod I think (hope)...
I've noticed that my swbf2 Sound sometimes slowly fades out until fully silence.
So it isn't really a mute, but I've checked all up... And the sound is at 100% as seen in my
Windows sound Options. This Problem is really anoying because I Need to restart battlefront completely,
I don't get fixed if I restart the map....

I get that too sometimes. I usually don't bother about it though, as long as it fixes when I restart.

It happens to me when I try to join a server, and I either:
A. Don't have the map being played
B. am banned lol

Just sign into a different profile, and sign back in to the first profile, and it fixes it for me.

Hmm okay, If I'm not the only one who has this problem... : D

I have had this problem a long time with Mos Eisley and Jabba's Palace.

When you join these maps, you will hear a music tune , that's not controlled by the regular music control level, meaning this plays if your game music is at 0%

When you join and hear the music starting , quickly leave the server and rejoin. If you hear it again rejoin again. If the song plays fully, it can but not always will mute the whole game.

This happens in PS2 Battlefront 2 as well, and only on the TAT levels.