Oh, and as for a gui to change the settings. There is one planned and I did see on the IRC channel that someone did work on something for it. It apparently did not make it into the SVN source code so either it's not quite polished yet for use or the main developer wanted to go in another direction.

For those of you who don't know, Navit has one main developer who also started Navit. There are a few others that regularly contribute code and fixes but most of the work though falls on the shoulders of the guy who started Navit. As a result there isn't a lot of manpower to spread around so somethings that would definitly be nice to have get put on a back burner while issues of having blue oceans and an overview map are higher priority.

The main developer is very nice though and welcomes anyone that wants to help. I actually got involved with Navit because I was asking him a lot of the questions that have come up here. After answering he asked if I could update the wiki for him and the rest is history...