On behalf of a friend....
I was just chatting to a company contact on the phone, telling her about this question. She was incredibly shocked, and went quite quiet for a few seconds, freaking me out a little bit.

She records music in her spare time, mostly covers, but some of her own stuff.

Last night she was recording using a microphone and wavepad, when the doorbell went, she ran to get it and there was no-one there. Just passed it off as being kids or something.

Anyway, as she went back upstairs she noticed that wavepad was still recording, and that there was a small, consistent sound showing up along the recording, so she rewound, increased the volume, and had a listen. The sound seems to have really spooked her, but I can't make hide nor hair of it.

She's uploaded it, and sent me the link.

Can anyone here help?
Warning, still pretty scary
( Agnostic Antichrist Baltimora, Thu 3 Jul 2008, 13:21, 9 replies)

...
damn you.
(The Empress it seems you CAN polish a turd!, Thu 3 Jul 2008, 13:23, closed)

Damn and blast
you got me.
( Thinker, Thu 3 Jul 2008, 13:23, closed)

Damn
Bluddy rickrolled again.
(Scobro is still here..., Thu 3 Jul 2008, 13:31, closed)

You got me
Damn you to Hull
(Herr Doktor Lemminge Is bored, so cheer me up!, Thu 3 Jul 2008, 13:41, closed)

At
least it wasnt the frickin' Ponies...
(kitescreech still here, Sat 5 Jul 2008, 8:20, closed)

This got me...
www.youtube.com/watch?v=3KANI2dpXLw
( jim_bob can herd cats., Sat 5 Jul 2008, 16:08, closed)

Arse.
Arse. Just arse.
(dchurch bah, Mon 7 Jul 2008, 14:03, closed)

*remind self
to read replies before clicking links.
(Ethelred is watching cheese grow, Tue 8 Jul 2008, 10:14, closed)