You have set up the UME development environment as show here. Also that you can change the Flash UI as explained here. You should be familiar with or have the desire to learn C programming, including the 'auto' tools. A good tutorial on automake is here

Dependencies Needed

aptitude install libgtkhtml2-0 libgtkhtml2-dev libxml-perl libxslt1-dev libglade2-0 libglade2-dev libsqlite3-0 libsqlite3-dev libhildondesktop-dev xulrunner