LZX Cyclops will do this with galvonometer protection. It's also pretty easy to DIY an ILDA to 3.5mm connector (the pin diagram of an ILDA connector can be found quickly with a google search). Once you have an adapter rigged up, you can amplify the signal with any regular audio amplifier. The issue with this method is that the galvos can be overdriven and cooked. With all the mathematicians on here though, somebody might be able to code a protection object. Lowpass filter might even just do it.