audio mp3 wav file protection program

Hi Coders! This project should be relatively simple for a coder who knows what they're doing. I'm looking for an easy to use program that can quickly and effectively encode wav files and mp3 files - preferably any format of audio files with a password, so that the end user needs a password to open the file with the option of setting just use password once or use password every time they open the file. Any other associated features that would be handy for a market such as this i am open to suggestions of what is possible. the program itself shouldn't be too big in size. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform windows XP - as many compatibilites as possible