Using your N800:... An explanation: You copied and pasted a URL (in this case, "http://streams.wgbh.org/wgbh.m3u") rather than saving the one that was playing in Media Player (in this case, "http://64.71.145.107:8000") because the copied and pasted link is more general. It lets Media Player on your tablet try a few possible servers for the stream and select a working one. Media Player helpfully offered to bookmark the server that worked today, but tomorrow a different server might be working better. The more general link will help avoid that sort of problem.
I listen to KCRW's streams myself, and here's how:Open a web browser window on your N800 and go to KCRW.com. At the very top of the page are three buttons: "Live", "Music", and "News". Tap your favorite. Near the top of the new web browser window that opens in a horizontal band that reads, "Listen in stand-alone". In than band, tap and hold on "iTunes/MP3". In the context menu that opens, select "Copy link location". This will copy the URL of this link to the clipboard. We may want it a little later. Again in the "Listen in stand-alone" band, tap (but don't hold) "iTunes/MP3". Media Player will load, buffer, and play the stream. If you want to save this stream, open Media Player's menu, and go to "Clip", "Add media bookmark..." Edit the name of this bookmark as you'd like. Delete the contents of the "Web address" field (probably something obnoxiously long and/or numeric). With the blinking, vertical text cursor still in the "Web address" field, paste* the clipboard (the URL you saved earlier) to this field. The field should now contain something like "http://media.kcrw.com/live/kcrwlive.pls". Tap the "OK" button.
As a short cut, here's the general KCRW links you'd wind up pasting if you followed the steps above for each of the three live streams:KCRW Live: http://media.kcrw.com/live/kcrwlive.pls KCRW Music: http://media.kcrw.com/live/kcrwmusic.pls KCRW News: http://media.kcrw.com/live/kcrwnews.pls In general, for the best results listening to any given station's audio stream with Media Player on your N800, look for two things:an option to listen in a stand alone player an option to listen to "MP3" or in iTunes, WinAmp, etc. Other stream types will work, and there's ways of listening to many streams that stations only offer embedded into web pages, but finding one or both of the above things will increase your chances of finding easy success.