How to set up a Raspberry Pi AirPlay receiver - The Pi
WiFi & Bluetooth 5.0 Audio Vorverstärker Receiver Platine, Wireless Multizonen-Heim-Stereo-Musikschaltungsmodul mit Airplay Spotify-Anschluss für DIY-Vorverstärker - Arylic Up2stream Mini V3: Amazon.de: Elektronik & Foto
Shairport Sync Airplay receiver with Raspberry Pi + PCM5102 DAC - YouTube
Raspberry Pi: 35 Dollar HDTV Airplay Video Receiver statt Apple TV 2?
Raspberry Pi: Universeller Audio-Empfänger für Musikanlagen – creativeturtle
Add AirPlay to Your Classic Stereo with an Old Apple TV - TidBITS
Apple Airplay on Raspberry Pi in 7 Easy Steps - App Code Labs