Convert Video and Audio Online

Im looking for a qualified person who, explain to me your capabilities in completing “this” job, ask me questions about “this” job and any referrals or examples pertaining to “this” job. Secondly, I've been burned twice on this project from other lancer sites, If you have any doubts pertaining to this project, please don’t waste my time and do not bid unless you are qualified/serious about this project. I've wasted enough time patience and money for nothing. Thanks for your understanding. I already have the design, just need the programming itself. First, I would prefer the Joomla site, but if you think it will be faster or better on PHP, let me know why. The site is divided into three parts 1. Video Conversion Formats: MP3 MP4 ACC OGG MIDI WAV Wmv AVI FLV 2. Convert audio All formats bitrate: 96th 128th 192 320th 3. compress images compress png compress jpeg All free guest can convert up to 5 files or 30MB whichever comes first (and all guest can convert only to MP3 files) user can registration and pay (with PayPal) for is membership: 1. up to 1 GB = 9.99$ (per month) and so on (i have php scripts of the convert video and for compress images)