The volume is good at 50%.
In build 26 the old sounds are clear, but now they are *** (i don't know, how to explain).
type "s_resamplequality 0; snd_restart" at the console. That will switch it back to how it was in previous builds. To me, it sounds like runnig a cheese grater on my eardrum. Perhaps you've gotten used to the jagged wave forms? Switch back and forth between 0 and 1, and grab/drop a flag a few times. I think you'll find the new resampling sounds better/is less painful.
Another thing 1: I saw there are the sounds endgame5.wav and endgame6.wav. I can't remember that i heared this sounds ingame. Maybe u forgot to change something, that only the endgame 1-4 sounds are used?
Looks like 1-4 are the only ones used. I've changed it to use 1-5 for the next version. 6 wasn't even in the right format, anyway.
Another thing 2: Shouldn't the flagpass.wav sound be in the flag folder?
Should. There are several things I don't like about the sound structure/file names, but if I change them now, it means everybody will probably re-downloading sounds off of the server, wasting a bunch of bandwidth. Maybe I'll restructure things if I do a major release.