RetroTunes is a retro-styled MP3 player project built on the Arduino Uno platform, featuring an OLED display (128x64) and an HM10 Bluetooth module. Enjoy a nostalgic music experience with this DIY ...

If you want to give people more options without forcing a playlist, Instructables user LifegraphLabs shows off a system that uses RFID, an Arduino, and Facebook to play everyone's favorites songs.