I have it somewhere on the sd card but honestly, I forgot what it sounded like and the name of it. Was it "notice me"? I can't help you at this moment because the phone won't let me upload. The only other thing I could think of if nobody else comes through for you is to do a COMPLETE nandroid backup in recovery, reinstall the previous rom, find the sounds and copy them to your card. Then go back into recovery and restore the full nandroid backup.
Or another way is to extract the rom zip file on the sd card or computer and then look in system/media/audio of the extracted zip and that's where they are at. Put them in (make these directories if you don't already have them) /sdcard/media/audio/notifications. After a reboot, they "should" show up in the place to change notifications. If that doesn't work the program called "aring" should set things up for you. I think you still might need a reboot. Sorry I couldn't be more help, I'm at work now.