Gnump3d is a streaming server that can help you share your music collection with others. Although the name is using mp3 it can serve ogg as well, so you don't have to convert all your mp3 files to ogg files.

This tutorial describes how to set up an audio streaming server with Icecast2. In order that Icecast2 can stream audio to listeners we install Ices2. Ices2 is a program that sends audio data to an Icecast2 server to broadcast to clients. Ices2 can either read audio data from disk (Ogg Vorbis files), or sample live audio from a sound card and encode it on the fly. In this article we will let Ices2 read .ogg files from the local hard disk.