HI Giordano thanks for response. Firstly when I download the siren ( I dont use siren mastery ELS only) then I go to mods/x64/audio/sfx/resident.rpf then I press Edit mode and pressing on vehicles.awc export in OpenFormats (.oac) on my desktop and then in to folder where is sounds inserting the new sirens and then i take vehicle file from my desktop and dragging it to resident. is there any mistake I made ?
Sorry for my poor English...
and thanks for help