What are your system sounds set to? By that I mean, what sounds go off when you start the computer, shut it down, empty your recycle bin, etc. The first attachment is what I used to have for my startup noise. I've always had a coin noise as asterisk. Well anyway, I changed my sounds to a wheres dezzer theme, inspired by Khold's crazy dezzer Text2Voice things. Those are all in the zip file I attached (the alarm was a file I timed to wake me up this morning).