Hello!
I appear to be having problems with siren mastery crashing while using this siren pack. It doesn't do it with other siren packs so I am asking if you know of a fix.
EDIT: I have fixed the problem finally. The solution that I have found was to use the non-siren mastery version and export that .awc to .wav and then put it in the vehicles folder in siren mastery. It seems that there is something dodgy with the siren mastery setup provided.
Thanks anyway, it's a great mod.