Iron Man Repulsor Project Questions

Hello all,

I am attempting to plan out some Iron Man electronics. I have pretty much everything planned out for the helmet. I am having some issues figuring out the repulsors though. I saw the myoware glove tutorial but I am trying to go less expensive. I have motion controllers and an arduino mini for programming. The LED I picked is a 12V so I am also planning to use transistors and voltage regulators to get what I need. My issue is with the sound effects. Is there a decent mini board out there that I can load a few sounds onto such as a power up, power down and fire. Also if there are any suggestions for a palm LED that uses less voltage that would be great too. Would a Teensy Prop Shield work for this? It looks like I need to have a Teensy board to go with it as well? Just looking for ideas and suggestions.

Thank you!