Finish php script 90% completed (youtube downloader) to mp3

1. I have a project that's almost done , roughly 99% done 2. it's a youtube cacher to mp3 script, You can see the full details on this project here http://www.freelancer.com/projects/PHP-Internet-Marketing/Youtube-converter.html Here is how it works a. the user watches a video on my site that matches the youtube video id [login to view URL] b. the script checks to see if the file is local on the db, as well as the mp3 file is on the folder (public_html/mp3) (if not local) the script will then cache the youtube (flv, title, description, id) and save on a db table. As well as the youtube file (save on directory "public_html/flv" c. the cache is done via root, so even if the user closes his browser, the cache continues, d. After the cache is done, the flv is converted to mp3 codec 64kbps, and given the download link in real time e. The user is now able to download the mp3 file f. The script runs using 30 ips added to the server, so each download request is done via each ip, (30 total) simultaneously g. if the video has already been cached, it's stored in the db, so if the user watches a video already cached, then the user will not have to wait for cache, just download the mp3 file ==================================================== (WHAT I NEED) 1. the script is inconsistent i'd say about 70% failure ratio 2. the 30 ips are not added, supposed to be added but not implemented in the script. (will need to add more ips later) 3. if a video fails to cache, retry another ip 4. check both local db and local mp3 directory, before offering a download link to the mp3 file. If not local on mp3 directory recache the flv.