I take it that you dont know action Scripting?
First off...i see the background picture and i wonder what program you used....hmm, the one i have loooks very similar, actualy its the same thing. The loops are pretty good, actually there great....but mabye you should make a part two of this , learn a little scripting, and add some stuff. Like for instance....on each categorie (I.E. Drums, Melodie..ect.) you should put mabye a volume controle. since you dont know how to do it professionaly i hypothesise, a tip for you would be 25% 50% 75% 100%.....get it.
and mabye you can add a little vector of images people can select for there music. I hope you got the picture.
.