Is there a way to hook up standard christmas lights to modded car audio system? Answered

I have been working on a system for quite some time.  I am using a computer power supply to power a car stereo and an old monitor AC adapter to power the amp for my woofers (in my garage).  Everything is hooked up and working suprisingly well.  I was wondering if there was any way to hook up some standard (non-LED) christmas lights to this contraption and have them blink to the music...I've been reading some and it seems like I'll need to go with an SSR with a load capacity of 240v.  Is this correct or is there another route?