Byrnie
Headphoneus Supremus
It's the game. This latest update introduced some sound issues on certain maps. As for your music, no better time than now to start replacing all of those MP3s with lossless!
I don't notice a difference with lossless but I have considering at least converting my albums to FLAC. I figure if it's something I will listen to a lot and the whole album is good that I might as well. Thanks for the info about BF4, I was playing Operation Locker and noticed it.