At my work we try to limit the incoming bandwith from streaming webradio's. Therefore we want to stream a couple and then distribute/share them over our internal network.
Any suggestions on how to make this possible?
You can create your own webradion on your local network and streaming webradio from internet.
This is possible.
Look to SHOUTcast
You can broadcast even videos on your network using vlc. I never tried, so I suggest you to read the documentation.