I'm wanting to put movies on my iPod Touch 2nd Generation and I downloaded Handbrake but I already have a couple of movies on my laptop with some as .avi files and one with MPEG-4 file but it will not let me select in under Source in Handbrake. Do I have to convert those files to a certain file type because the movie doesnt even show up when I click "Browse". All the help will be much appreciated.