Originally Posted by
Burton
Kinda cool - alternatively you could key it into a sound sensor and a mobile boom box and run your own mobile disco!

The problem is Wattage. These LED's use only milliwatts, the whole string probably uses only four or five watts. But audio speakers are going to demand much, much more wattage, like 35 watts each, or 75 or 200 watts before you get anywhere near Loud.
PS-I removed the radio from my bike, it wasn't worth the hassle, and it was a distraction.