They sell light kits that pulsate to music for car at Autozone. Last I checked they were like $24 per 20" tube I believe. It plugs into any auxiliary power (cigarette light type) and has a switch with Off/On/Pulsate. I had blue ones mounted under my driver and passenger side dashes in my old car. Regarding the audio upgrade, you should post in the Audio thread, not here. Good luck.