I know nothing about mac's but i am currently doing the same with a pc and software called road runner with the help of Allison from this forum. In my opinion yours is too cluttered. Simple is the best way. Is yours touch screen controlled? Here is a few pics of mine
(http://img54.imageshack.us/img54/2896/menuon4yk.jpg)
(http://img77.imageshack.us/img77/3348/mixeron7kf.jpg)
(http://img73.imageshack.us/img73/814/gameon5is.jpg)
(http://img72.imageshack.us/img72/9715/mp3player5ju.jpg)