As with other Chromecast apps, all you have to do is queue up your music on the Rhapsody or Napster Android apps then tap the Cast icon. Your music is then transferred over to the Chromecast will play through your TV speakers or home stereo system. Control over playback remains on your Android device. Rhapsody has always been a proponent of TV integration. It has long had apps available on game consoles, such as the Xbox 360, so that its users could play music right in their living rooms.  Both apps are free, though the Rhapsody Napster services cost $10/month. Rhapsody also offers a free two-week trial.