How to choose a transitor?
How do you choose (and use) a transistor to make led lights blink to music? I am making a speaker system and thought it would be cool to add a led light system. Also where would i add the transistor, to the audio in line? or to the output line (its a 12w output)? i have looked around a bit but still cannot figure out how to connect and use a transistor... HELP! :)