Technical FNaF released an audio dump yesterday.
To upload those files, you must convert the files to .ogg, afterwards you go to Special:Upload and upload it.
Then you put the file into an "Audio" tab. (As there aren't any you'll have to create these yourself.) You will need to follow this format (taken from the FNaF Puppet page):
==''(In-game or whatever)''==
<center>(Insert description here.)
[[File:(Insertfilename).ogg ]] </center>
Edit: I've already converted the audio dump and uploaded them; we just need to get them sorted out to the correct pages. (The information on uploading might be useless because I did it all but at least everyone will know how to upload audio files.)