Headphone Audio History
I haven't yet tried to recreate this to figure out exactly what happend. The gist of the story is this
After several days of using my MacBook Air (mid 2011) with Mac os X 10.8 (Montain Lion) I decided to plug in a pair of Apple white In-Ear headphones with mic and suddenly I am listening to a stream of boing boing boing swoosh boing boing boing .... etc. As near as I can tell it was an alert sound for every email I had received in the past several days, and a swoosh for every email I had sent. All told it probably lasted 40 seconds. Very odd indeed.
Originally I thought something was going wrong with the audio, but I really think it was all the stored up audio alerts for the past several days.
I am going to try to recate over the day and see what happens.
MacBook Air, OS X Mountain Lion