[Lilux-help] Streaming Proxy/Relay

Hello, I am searching for my work for an Open-Source Streaming Proxy/Relay service. It should receive a stream from a radio station (like RTL.LU or SWR3.DE,...) and forward it to a few clients in the local network/intranet. I have found some at Sourceforge or Freshmeat (like Icecast). But the problem of all them is that they cannot relay an WMA (Windows Media) or RM (Real Media) stream which is used by most of the stations. Have some of you experience with a service like this which could do this job? The problem with streaming is, when you receive a stream at 20kps, you have 2 Gbyte at a month. And when more users are receiving each his own stream, it is too expensive... I watched even for squid, but it does not caching streams. Thank you for your help. Regards, Michel Kohl