I ran the mp3 through this Morse decoder website:
http://morsecode.scphillips.com/labs/decoder/
Doesn't look like it's anything, but just in case, here's what I got.
EHE#ES E EEEIH EI####55#5EH5######S#ES###S#IEIEIIISEEEE I EEEEEE SS EEISIIEEEEEI EE EEEI##H#####5EH###I##EE E EEE E E I E
I didn't change any of the volume or frequency options, so if someone more audio-savvy than i wants to mess with that or maybe try to clean up the audio, we may get an answer.