Well, I've really put some work into my main skin and all and it's becoming already 14 MB o_O and its my first skin, and we've been through alot. It's much better than the one on jk3files, and after Customization support is done and I try to fix the annoying bug with the invisible saber in SP, everything exceot the sounds will be done. I'm 14 and can't afford any sound programs, and the only one I have is Audacity. I know how to record sounds and have a great high quality mic, but I don't know how I can make sounds that work In jk3. HELPS PLEASE!
Get GoldWave, it's an audio program I highly recommend and use all the time. It has support for all kinds of file types, plus you can record with your microphone as well with the program.
He wasn't asking about programs...although on that note, isn't GoldWave the program where you have to pay for all the addons? Maybe I'm thinking some cheap imitation. But Audacity will work fine too.
Anyways, you can record them any way you like, but when you export them, they must be WAV or MP3. Sample rate must be 44,100 hz, and it has to be mono. If you're using MP3s, I believe they need to be 128 or 160 kbps.
And, make sure the directories are like they should be, i.e, sound/chars/(charactername)/misc, and look at other character sounds in the assets to see what they are named, because every one is event specific: anger, alert, pain, death, taunt, etc.