I googled around a little (I know, I shouldn't do that) and found the following: http://www.fauquierent.net/earclicking.htm
It's right up our alley, let me quote:
Just like any muscle in the body, these muscles can also "twitch" rapidly causing the clicking noise in the ear. Tensor tympani muscle spasms typically produce a clicking sound whereas stapedius muscle spasms produce more of a buzz/click sound.
I post this as a reference for people who might end up here looking for this symptom and for fellow BFSers who suddenly realize they have this condition. So you know that you are not the only one.
Take care folks!
