I mentioned the 770 as a perfect machine for a SlingPlayer client to every SlingMedia employee I could find at their booth at CES. I have a Pocket PC also, and the SlingPlayer will be out very soon for that (they were demoing it), but the 770 would be even better.

Like it was mentioned, the core of the SlingPlayer app uses Windows Media, so that may be tough to do on the Nokia. I have my fingers crossed, because my Pocket PC has been collecting dust since I got the 770. No comparison in web browsing between Opera and PocketIE...