mp4 encoding

figure i would post in here since it has to do with sound and isnt getting much attention in general software but looking for a mo4 encoder....gui if possible im pretty dumb when it comes to command line programs.....but i am using the nero encoder but the demo runs out..i ahve been looking for ever on the internet fo a program but they are all jsut command line ones and like i siad cant seem to figure them out.....any help is appreciated
thanks

nero mpeg4 AAC is the best mp4 audio encoder out, if you really want mp4 that much buy the plugin!!! try to get some info on this site: www.hydrogenaudio.org