(Note: I'm not sure if this should go here or the programming category. Please feel free to move it if it would be better there.) We are looking for a way to do some server-side file manipulation for audio files. Here's the scenario, visitors to our site are uploading audio mp3 files (legal ones ) to our server. We are trying to figure out a way that we can bundle these files on the fly into a self-extracting executable and make them available for download. This is easy on the client side but I'm not sure how to do it on the server side. Are there applications that would do this or are we looking at some custom programming or is it even possible? Any advice would be greatly appreciated!