That's what I'm trying to do .... It seems to work fine (read instructions for BubblePnP) however I can't get it to work with Chromecast.

Just tried to get this working with BubblePnP. It has a xiialive option to stream to Chromecast, and it seems to pick it up when I play something but then it dies saying enable force Shoutcast proxy in settings, which I've done, but still not working. Perhaps more of a question for BubblePnP that this, but thought I'd ask here as BubblePnP explicitly lists xiialive support, and I can stream other stuff to Chromecast with BubblePnP.