Use an AUX cable to connect your device to Echo. Now, Open the Alexa App on your smartphone and open “Devices”. Tap on the connected device and click on “AUX Audio”. ... Play music on your device and you will hear it from your Echo speaker.
How do I use echo dot as a speaker with AUX?
- Make sure you're using a 3.55mm aux cord. No other sizes will work.
- Connect one end of the cord to an Echo device that's compatible.
- Connect the other end to the audio output device.
- Play music or other audio from the music device to see if it's working.