Requirements:

• Show current song/artist on instrument cluster display
• Allow basic song control (e.g. skip song) from re-purposed built-in controls on steering wheel stock
• Be able to play music from the following sources:
  • Flash drive or SD card
  • Smartphone via AirPlay (wifi)
  • FM radio via USB TV tuner SDR (could also be used to pick up any other frequencies as well) - Optional (bonus)
  • Internet radio via wireless hotspot on smartphone - Optional (bonus)
• Output audio in high quality to amplifiers via an external DAC