16 bit, 44.1 kHz streaming audio library for Teensy 3.x, featuring:
http://www.pjrc.com/teensy/td_libs_Audio.html
Use this graphical tool to design your audio project. Easily browse the library’s many features, connect objects, export to Arduino code, and quickly access details for the functions each object provides for you to control it from your Arduino sketch!
http://www.pjrc.com/teensy/gui/
Audio Adaptor Board for 16 bit stereo input and output.
Teensy 3.1 12 bit DAC
Teensy 3.1 or 3.0 ADC Input
Teensy 3.1 or 3.0 PWM Output