Download of butterflyMP3_FW_0.1_20050403.zip (butterflyMP3_FW_0.1_20050403.zip ( external link: SF.net): 100,344 bytes) will begin shortly. If not so, click link on the left.
Firmware and Hardware for an MP3 player using an AVR Butterfly, VS1001K decoder and SD/MMC card with FAT filesystem.