Terrestrial radio, digital audio broadcasting (DAB), news and features packages, music and speech based programming, and radio drama are examples of broadcast audio formats. Podcasts, internet radio, CDs, music television, WAV files, and MP3s are examples of non-broadcast audio formats. Broadcast formats are transmitted through airwaves while non-broadcast formats are distributed online or through physical media. Common audio formats include CDs, WAV files, and MP3s which can be used to store and listen to music digitally.