What are some alternatives?
When comparing Playary and Serendipity by Spotify, you can also consider the following products
Netflix - See what's next. Watch anywhere. Cancel anytime.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
Hulu - Hulu is a streaming video on demand service that provides users all their TV in one place.
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
SoundCloud - Enjoy music & follow favourite artists
Google Play Music - Free radio for everything you do. Store 50,000 tracks from your personal collection. Subscribe for on-demand access to 40 million songs and offline listening.