The speaker is doing great (there's only one, mono sound). I remembered your post about the 80's Trinitron and it's one of the first things I checked when I opened it. The buzzing sound is definitely not coming from the speakers though.
Radiotvnut, I don't think it's the yoke, the noise it's making can't really be described as buzzing, it sounds more like a small motor. I attached a small MP3 file, it's recorded with my computer mic so it's not so great. Could it be a coil or maybe one of those long, white, non-electrolytic capacitors? Also what do you mean about how JVC is "proud of their parts"?
I can't attach MP3 files, so I added a link to megaupload. Don't worry, the MP3 is completely virus-free. Does it sound like it could be the flyback, or is it impossible for the flyback to do that and still work? If it's the fly, I may as well give up all hope on it right now.
http://www.megaupload.com/?d=3I0DTB8G