Hi Salty,
Yup, file conversion can be a pita.
I see that Fish also had to tweak his KML file in order to show a line (i.e. track) on his maps and not just points.
Gmap4 simply passes the KML file to Google and Google paints that data on the screen. The Gmap4 code I wrote does not care (or even know!) if the data in the KML file represents points, lines or a combo.
There is a bunch of info here on using Yahoo Pipes to convert SPOT to KML. I think they include an example that you can tweak with your own data.
http://faq.findmespot.com/index.php?action=showEntry&data=69I do not have a SPOT so am no help in making that work.
Finally, there is info in the Gmap4 'Help' file on editing KML files. Be sure to see the appendix.
http://www.mappingsupport.com/p/gmap4_help.pdfYou're getting close!
Joseph
Gmap4 author