Adafruit Audio FX Mini Sound Board - WAV/OGG Trigger 16MB Flash : ID 2341 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: AIHJCNELE WTV020-SD Voice Module U Disk Audio Player MP3 Sound Module Game Console Voice Board WTV020 WTV020M01 with SD Card Slot UART 232 for Arduino : Electronics