For example for a made-up car addon audio called the issipissi with files named the same: data_file 'AUDIO_GAMEDATA' 'audioconfig/issipissi_game.dat' data_file 'AUDIO_SOUNDDATA' 'audioconfig/issipissi_sounds.dat' data_file 'AUDIO_WAVEPACK' 'sfx/dlc_issipissi' So your fxmanifest....