Amazon.com: Pyle Professional Audio Mixer Sound Board Console System Interface 4 Channel Digital USB Bluetooth MP3 Computer Input 48V Phantom Power Stereo DJ Studio Streaming FX 16-Bit DSP Processor - PMXU43BT.5 :
Arduino Halloween MP3 Soundboard - One Guy, One Blog
GameShow SoundBoard | CrowdControlGames
Adafruit Audio FX Sound Board - WAV/OGG Trigger with 2MB Flash : ID 2133 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits