I am building a moving target system for a shooting range. It will have a 40 foot target moving perpendicular to the shooter. I have not had any problem with fabricating the target system, but I want to go above what the customer requires. Hopefully this lead to more work for myself in the future. From 1000 yards it can be difficult to see a 1" mark while the target is moving at 15 MPH without great optics. I am wanting to add an audio controlled (ring from when a bullet impacts steel) lighting system. I have search online stores gone into electronics shops and not many people have been helpful. So I figured an EE or EE student would be my best choice. I have come to the conclusion that a portable system would be best as it could be moved from one target to the next without laying wiring to the range. Any help on leads or help designing a circuit would be greatly appreciated. I am an automotive technician so the fabrication has been no problem, but building an LED circuit actuated by audio fools me. Thank you for your guys time.