Anand posted to an excellent piece of work here, somebody has done wonderful work with the default windows sounds , check it out for yourself. Also as I navigated more, I found a link to the 'F-word' audio. I enjoy hearing to this again and again and to motivate myself to start using this word more on a daily basis. I hope nobody gets offended when I tell him/her 'F*** Off'
Tejas Patel