I have been trying to figure out how to get custom sounds into singleplayer, and after looking at other map csv files I see that they usually call lines for sound like:
sound,uk_battlechatter,blackout,all_sp
sound,voiceovers,blackout,!all_sp

It's a little different from multiplayer, where all you do is put sound,,etc.

Why is there an exclamation point between all_sp in the second line, and why does it specify ,blackout, in both lines? I've been trying to call in my custom soundalias file called sounds.csv for my map called testj, so what would the csv line look like for that? I tried

sound,sounds,testj,all_sp

but it didn't work.

Actually, on second thought, some of the stock sounds didn't change because they weren't defined in a separate mod. Fixed.