Playlist or CD Standalone or Web based application

Hello, ***edit**** Would it make a difference if the program created a playlist from only tracks that I supplied?? What if a iso/cd image was made instead of the actual ability to burn to cd? ****** I need for my clients to be able to use a very simple program that allows them to select audio files in a specified order to burn to a cd/mp3 player etc.? Many of the files would be provided by me, I'd also like for them to be able to select audio files off of their computer.? Once the files were selected - they would either click a button to burn to cd or mp3 player etc if possible.? If not, then there would be a complete "playlist" or set of files that could then be imported into another program such as windows media player for burning to cd or mp3 player/ipod etc.? I'd like to be able to add more audio files at anytime.? Example of how I'd like it to go: Login to website or program: Instructions given to select which tracks they would like to include from say colum A:? 1,2,3,4,5,6, 7 etc.? Then select wich tracks to include from column b: a,b,c,d,e,f,g **and/or upload/select their own track**? .? The cd would play the tracts in this order:? Track from column A the coresponding B tract, next selcted A track then B track selected to go with it.? Then click create. I need for this to be easy to use and inexpensive for them.? Thanks so much for your help! ## Deliverables If I am missing something not knowing how the process of software creation works exactly, please feel free to let me know.? I know how to upload files/ pages to my website and am not opposed to doing that with instructions if it is different.?