If you are like me and were disappointed that your first-generation Chromecast was not compatible with Spotify, the update we have been waiting for is here!
Users on Reddit have noticed that a firmware update to the first-generation Chromecast has made it possible to cast Spotify to it from your Android device. To get the update, all you need to do is reboot your Chromecast to force the download. You can do this from inside the Chromecast app or by unplugging the micro USB from the back of the Chromecast and plugging it back in.
Owners of second-generation Chromecasts and the Chromecast Audio have enjoyed this feature for a while, and when it was first announced, many original Chromecast owners were worried that they would be left behind. Now that Spotify is working on all the Chromecasts, maybe we will see it coming to the Nexus Player soon, too.
Now go cast your Spotify tunes to whatever Chromecast you want!