+1 on the request.
As for going through LMS, today that doesn't seem like the best option, since mysqueezebox.com has left the building, and with it, DI.fm LMS app. As of now, one can certainly add a pls playlist with the desired station(s). I've already built some code to generate their URLs.
But a native implementation that directly browses DI.fm (and sister sites rockradio.com et al) and lets you navigate using Wiim app across categories and FAVs would be awesome. Including DI.fm's SHOWs would be even better.