Good site Jim, I would guess that it's a US site, We used to have a "Highlander Radio" bases somewhere near Dingwall and after a bit of searching I found it. They have changed their name to "Scottish Internet Radio". It's more "choochterie" than the new highlander radio.
Now there's a word to flummox a few mudcatters.
Try it out here http://www.scottish.internetradio.co.uk/

Andy