Streaming media to your TV can be done in a number of different ways, but there's no doubt that one of the simplest ways to do so is with Google's HDMI streaming dongle known as the Chromecast. Last year, Google launched a new model of the Chromecast and alongside it, they launched Chromecast Audio, a similar device that allowed users to plug into a home theater or speaker system that didn't have the Google Cast technology built in, and stream music to it. Normally, the Chromecast and Chromecast Audio are $35 each, but right now you can currently pick up each device for $5 off, bringing them down to $30 a piece.
The Chromecast is geared towards streaming video and app/game content, but it will support the streaming of audio content as well to whatever TV or monitor it's plugged into. The new design allows it to hang down from the HDMI port it's connected to and when it's not in use the back of the unit holds the HDMI cable magnetically. The new Chromecast also support 5GHz networks in addition to the 2.4GHz supported by the original model, and can be used to mirror the display of an Android device. With Chromecast Audio, the functionality is much the same but as stated above it's only for streaming audio content to speakers, enabling WiFi on any speaker it's plugged into.