aux.app is a non-commercial music player for desktop computers and the browser. It lets you play music and videos from popular streaming providers like SoundCloud, YouTube, Mixcloud and Deezer all in one player.
You can connect your existing accounts to access your playlists and favourites and create new mixed-content playlists. Playback is seamless, with crossfade, queues and all the controls you'd expect. There are recommendations, a remote-control feature for your smartphone, an anonymous mode and more features to explore.