Yes, get the sounds then

list.Set( "rb655_LightsaberHumSounds", "#myCustomUniqueInternalName", {
rb655_lightsaber_humsound = "<pathToHumSound>"
} )

list.Set( "rb655_LightsaberSwingSounds", "#myCustomUniqueInternalName", {
rb655_lightsaber_swingsound = "<pathToSwingSound>"
} )

list.Set( "rb655_LightsaberIgniteSounds", "#myCustomUniqueInternalName", {
rb655_lightsaber_onsound = "<pathToOnSound>",
rb655_lightsaber_offsound = "<pathToOffSound>"
} )