This is my feedback:
Great to have a real time clock working.
Think about crafting the sounds. Decide on what these are. Take inspiration rather than direct-content from your probes. Have high quality sounds. Decide on whether it is MP3 or physical sounds and get prototyping.
Lights are horrid.
How commercial do you want this to be?
How will users set the time?
Very good comments and points to be getting on top off!