You can also find loud ringtones at
http://davidenglish.com/wml/index.wml. Visit the site with your BlackBerry and choose "Non-Musical MIDI Ringtones."
Some of them are as loud (and irritating) as ringtones can be on a 7200- or 7500-series BlackBerry.
DavidE
davidenglish[.]com
beepzoid[.]com