[LAU] Help with amateur radio setup

Hello, I and a couple of friends have decided to set up an amateur internet radio. We have a relatively small budget thus we want to go step by step. What we've thought so far is to have a devoted box with all the music archived. Ideally we want to make the interface very simple for DJs to use, even if this means increasing the maintenance cost of the system administrator. They should be able to grab a microphone and use a portable interface (yes, some DJs may be using windows) to choose music, play and start talking right away. The devoted box will be running Linux and I plan to administer the system. I have relatively good knowledge on Linux systems and programming in general. I want the system to be flexible, be it at the cost of difficulties in configuration or deployment. Please advice and share your experiences. -alip