A while ago we were working on a mobile solution for Moodle. One of the problems we faced was getting the images to load. Well, that problem has been solved, and we also managed to add a Flash lite quiz to one of our course (Whales). So if you are keen to see what we have been up to take a look at http://www.ilite.co.za/mlearn/ (mary, password)
Basically it works as follows. In Moodle we created a category called Mobile. Any course in this category will be available when you log into the mobile site. We did not do anything to Moodle, but instead opted to write a little PHP to format the content for a small screen. We used a small work-around for the images and Flash file. Getting the results from Flash written back to Moodle is on our wish list. It’s easy enough to do, but getting our developer to sit down and do it is the problem. Maybe more stick and less carrot is what is needed.