Creating a Functional Network for a Radio Station?

E-bot & Ro-bert asks: "I volunteer for my campus radio station and, as the only techy there, I've been asked to help design their new network. We're on a very fixed budget and we're working with win98 PCs. The network needs to provide the ability to simultaneously stream and transfer large files (uncompressed WAV data) w/o interruptions to the stream. I know their current idea of using a simple hub and connecting all the computers won't work, but I'm drawing a blank on what to suggest. The specifics: Two of 6 Win98 PCs need to have the ability to broadcast audio data from any source on the network. The other 4 of 6 computers must be able to transfer files on the network w/o taking too much bandwidth away from the streams. I'm thinking of QoS, but how should it be implemented? What does the slashdot community look for, and suggest, in making a high-bandwidth network?"