Apple AirPlay gives you convenient wireless access to your iTunes music library from your computer, iPod, iPhone, or iPad. Sometimes requires an optional firmware upgrade.
When you connect a DLNA-certified receiver to your home network, you can stream content like digital music files and photos from other DLNA-compatible devices and computers on your network.
Internet-ready receivers can play music from online services and Internet-radio stations via your broadband home network. They can also usually play music from computers linked to your network.
Some receivers can play SiriusXM satellite radio stations with the addition of an optional tuner. Some Internet-ready receivers can play SiriusXM's online music streaming service. A subscription to the service is required.
A receiver's USB input gives you a quick, easy way to play the songs loaded on a USB thumb drive or your iPod (when compatible).
HD Radio Tuner
An HD Radio tuner may be built-in to the receiver. This tuner allows you to get HD Radio broadcasts and multi-casts.