This web app is built as a hobby, to get more familiar with VueJS and Spotify API.
If you want to download it, check it out or build on it, then keep in mind that for it to work you need to edit file in server/config/config.json.template.
Add your Spotify API keys and remove the .template file extension.
For development use:
npm run server //This will run the development VueJS server
node index.js //This will run the server
Once done, go to: http://localhost:8888/login
UPDATE: Now you are able to stream music from the browser. Currently there are no controls available in the web app, will add them soon, but you are able to control it through the Spotify apps (Desktop, Mobile, Web).