If you go to \base\data\sound, right click the Name/Date Modified etc. bar and check Title, you'll see a lot of them have names.
admin - Beep 17
banned - Alert 3
brickClear - Dark tone 4
clickPlant - Open pop can
hammerHit - Clank 2
jump - Cartoon 3
lightOn - Alarm 4
playerConnect - air-pick
playerLeave - Beep 26
playerMount - Throwing floppy on table
printFire - Techno-Alert
processComplete - Beep 18
spawn - Organic (2)
sprayActivate - Rattling Spray Can And Spray
uploadEnd - Beep 18
uploadStart - Beep 18
wandHit - High tone 1