On sale today, all of the Amazon voice recognition players: Echo, Tap, Dot. I have the Echo in my office and like it as it has a very good speaker. I have just connected a Dot to my home theater system with an adapter cable (mini-phono/headphone plug to RCA plugs...also from Amazon) and now can listen to just about any genre of music whether it's in my library of music or on Amazon's. http://amzn.to/2gBWaew
This is the cable I purchased: http://amzn.to/2gBSFof
Upload Your Music: To play your personal music from iTunes, Google Play, and more on your Alexa device, you can use Amazon Music for PC and Mac to upload your collection to My Music on Amazon from your computer. After you upload your music, you can ask Alexa to play your music and control playback with simple voice commands. You can upload up to 250 songs to My Music for free.
And many subscription services can be linked to "Alexia": http://amzn.to/2gaHVP