I have a small project that I am working on and would like to have a "background" sound playing. The WAV file is only a couple K and I'm trying to keep costs down and the circuit simple. Everything I have seen in the forums seem to be centered around the audio shield but I was hoping to find something that could play a WAV file from the onboard memory. I have a couple Teensy LC I am starting the play around with. Is this possible with the LC or do I need a 3.1?