This is a working example of how to stream audio to Icecast with C# using mono while running linux/debian.
It's used as a reference for a post on my website Streaming audio files using Icecast2 and C#.
OGGEncoder.cs is a program from a different project, but shows how to prepare the audio files to be optimally played through Icecast2.
Libshout wrapper for C#: https://github.com/Zerpico/libShout-csharp