+1 standalone script

[serthy]

Yeah, okay. Unfortunately I cant help you with that, as I dont remember this part.
In the past I had similar trouble getting sound to work, sometimes it was a faulty soundalias or a different audio format/encoding altogether that didnt work.
Maybe go step by step until it breaks down: change an existing soundfiles name etc.
If custom sounds arent loaded, maybe your soundalias isnt read in the first place?
You could place it inside an iwd with 'zzz_' prefix, as these getting loaded last and should override the stock ones.