merge audio?

[sysco]

I am interested in enabling my web users to merge multiple audio file on the web. My users would select a number of compressed audio files (located on server)* to preview. Then the users would have the option to merge these files into one*file to save locally. Very similar to the dynamic PDF generation that some sites feature....except I want to accomplish this with audio. Any thoughts? Thanks!

[daed17]

use php, aspx or some other server-side script to dynamically create the playlist for the user, save it then use that file to create their playback. Remember to delete it once they are done with it.