Audio Watermarker Script

Need an audible audio watermarking script to implement on a website. The website is built with a login window - register or enter details and of course a log off if they are logged in. Once user has logged in... 1. User uploads Audio File (MP3 or Wav - Stereo Or Mono) 2. User chooses what audible watermark they want from a checkbox or drop down. (We will supply the audio files and must be able to add more to the code if need be.) 3. User chooses output file type & bit rate (eg. .Wav or Mp3 128kbps - Stereo or Mono) 4. User has the choice in downloading the file or emailing the file (within the site) to their client. The User must be able to preview their watermarked clip before downloading or emailing. This is a simple project and to a coder who works with Lame conversions, MP3 & Wav this shouldn't take long at all. We are looking to get this project finished as soon as possible. Once this project is handed back over to us, we must have total ownership and control over the code. There may be a bonus in it for the coder/coders who can deliver us a fantastic project. Ask for full details in PM... [login to view URL] ***Basically it muxes an audio file together with a small audio file that gets repeated at a predetermined fequency during the length of the original audio*** I need a quick solution!!