a take on ChaN’s wav audio player for the attiny85 – check out his website, really great stuff all over: http://elm-chan.org/
I built several versions for the new exhibition we did for the Centre Nature Pro-Natura Champ-Pittet – some play loops, other are triggered by light barriers and shock sensors
this version needs the RESET pin as a I/O pin, so once you flash and fuse it you can only reprogram the chip with a high voltage programmer. double-check the firmware, then type make flash
first before you do make fuse