This is a library of KiCad schematic symbols and PCB footprints for most Arduino modules. You can use them to make your own PCB design which will effortlessly connect with your chosen Arduino module.

#define COMMAND_PLAY_TRACK 0x01 //Play a given track number like on a CD: regardless of file names plays 2nd file in dir. #define COMMAND_PLAY_FILENUMBER 0x02 //Play a file # from the root directory: ...