I was having trouble finding new notifiers / alerts for email and instant messaging so I converted about 10-15 of my own (most were found on the web). Thought I'd give a link if anyone is interested. Download Ringtones
I have a 7100, so I can't check that the mp3s work; let me know if they have a problem.
If you have a sound file you want converted and/or posted, feel free to PM me; I'd be happy to post it for you to download.