Matt
I can relate to having way too many irons in the fire. I will be glad to get some of the have to projects off my back so I can start the fun ones. I am supposed to get hitched this week end and we are having the reception at the house so that has kept me busy the last few weeks.
After all that is over with I would like to compare notes on your ideal for the LED conversion. I am toying with the ideal of a Lexan block. I am thinking I will drill holes for the LED and glue them in and then attach the Lexan block to the stem of the bulb running 8 power leads and a ground out the back. Ports 1 to 8 are signal ports on the parallel port while ports 18-21 are ground if I remember correctly. I have found some software that will control these ports to bands of sound from audio files. I will give each channel a relay that will control a specific color LED. If you are interested I will send you the links to the software and share schematics.
Steve