How To Install Subsonic Media Server On Ubuntu 14.10. Subsonic is an easy to use, open source, web-based media server. Subsonic is written in Java you need to have Java installed on your system. Subsonic supports streaming to multiple clients simultaneously, and supports any streamable media (including MP3, AAC, and Ogg). After a 30-day trial period, certain premium features require a $1/month subscription.