Soundseeder!

Ampache is a web based audio streaming application and file manager allowing you to access your music from anywhere, using almost any internet enabled device.

Madsonic is a web-based media streamer and jukebox fork of Subsonic Based on Java technology, Madsonic runs on most platforms, including Windows, Mac, Linux, OSX, and Unix variants.

Logitech Media Server is the server software that powers audio players from Logitech (formerly known as SlimDevices), including Squeezebox 3rd Generation, Squeezebox Boom, Squeezebox Receiver, Transporter, Squeezebox2, Squeezebox and SLIMP3.

AudioStreamer is a free web-based audio streamer which gives you easy access to your music. It turns your PC in a streaming webserver. So you can listen to your music from everywhere and on any device(tablet, desktop, smartphone, ...) with a webbrowser..

AirPhones is an app that sends perfectly synced audio from your computer to your iPhone or iPad with no latency. It's a next-generation, solution to wireless headphones.

AmpMe is the multi-speaker music party app that lets friends play music in sync across multiple devices.

libresonic - Media streaming software