Sononym - Finally, a sample browser that understands audio
Spotify - Map shows when two people play same song at same time
Samplism - Feature-packed, audio asset manager for Mac.
SoundCloud - Enjoy music & follow favourite artists
Soundly - Functional music for better sleep, focus and relaxation
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