Well you can try removing the /home/user/.flipclock.conf file, but make sure you've got all of your alarms TURNED OFF first, or you'll end up with Lemmy's problem of having alarms set in alarmD that you can't control anymore. (still working on it buddy, I'm doing my absolute best to get you a solution before next Tuesday!!).

The other thing is to try running from xterm and see if you notice any errors coming up when you try to change the sounds/etc.