Use the program Lunar IPS for patching.
You'll need a copy of "Bare Knuckle 3 (J).bin"

PATCH TYPE A:
Patch the rom it with "BK3 Patch A - Sound and Music Only.ips" to get the audio/music fixes only

PATCH TYPE B:
Alternatively, if you want to play the hack in english, you can apply the translation (by Twilight Translations) and then apply patch B on top of that.
(Since I didn't create this translation hack myself, I won't include it in this download.)
Download the translation here ->    http://www.romhacking.net/translations/1375/

Apply patch "bk3_100.ips" (this is the translation patch) on the unaltered rom.
Then apply patch "BK3 Patch B - Sound and Music with Twilight Translation". It should now work!
