Voice recording/playback CCS C Source code for the EchoMp3 Player (Project 020 - MMC/SD MP3 Player) hardware. The code will write a 15 sec. mono ADPCM WAV file to the MMC/SD Card. Replaces existing code, no MP3 playback supported. Electret microphone input. Microchip MPLAB project files and schematic included. Individual license for personal use (hobbyists and students.) The complete source code and invoice will be e-mailed to you as soon as your order is confirmed. There are no shipping costs. No reselling or further distribution allowed!