I have some simple HTML coding which links off to a search bar which searches free music to listen to and download. Does anyone know how icould convert the code to facebook app able? I think its PHP on facebook?... not sure thanks
you can use whatever programming language you want to make a facebook application as it is all done through an API/ Webservice based on the REST method. Before someone answers yes, all the apps we have made are in .Net (same as all our sites) You really need to think what your going the application is going to "do" in terms of what goes on their profile, what in the news feeds etc and also "why will someone want to add my app to their profile"? Once that is done the job of actually coding it is fairly simple
You could probably do it without really delving in to the facebook api at all, but like AS says, you need to know what you really want it to do, before you start thinking about how to do it. Here's my guide to writing your first facebook application: http://www.swansoninternet.com/content/view/16/33/ however, i'm going to review this very shortly.