i plugged my headphones in the 3.0 usb slot and it worked.
Try repairing the game via Origin, cuz the way you explained it, it looks like some files are corrupted and needed a repair.
Also dont worry about losing the sound at the start of a match that's normal in BF4 it will come back in 10-20 seconds
repairing the game did not solve my problem... and the sound bug is in the game in general, even in the menu.
ok so i just figured out that the game was muting as soon as i click somewhere with my mouse. i joined a game by using only my keyboard and as soon as i used my mouse the game muted.
