YES, I got sound back on Minecraft classic (NOTE: Only WoM can do this).
Well I got this sound mod somewhere on the internet, and it works.
Site for Mod:
https://github.com/downloads/zhuowei/zhuowei.github.com/mcsndfix.zip1. Download the file
2. find Lib/minecraft and delete it
3. OPEN minecraft.jar using 7-Zip or WinRar
4. DELETE the META-INF folder in it.
5. Now Go in com\mojang\minecraft and Replace the c.class in it
6. IF NOT A BETA USER: you have to download the files manualy.
The Original file thread of the sounds are down (Good for me that i got Beta.)
7(ONLY FOR NON-BETA USERS). Download the files from somewhere.
8. BEING UPDATED, WAIT... (APPLIES FOR NON-BETA USERS )
Well thats it, good luck for it.