I finally installed the metroguide software last night (under VirtualPC). It does have an option to export routes to a CSV format that would be trivial to convert to the format gpsapp is using if anybody is getting sick of MapsOnUs.

Hey, guess what? I'm sick of MapsOnUs.

So tell me more about this software. How much does it cost, what map data set does it use, etc?

If it's Windows software, and if I like the data sets and the output, I might just write a little VB program to parse it and squirt the results into the player with FTP.