FileChucker is a great drop-in solution for file uploads, and worth every penny of its very reasonable cost. Encodable's support is excellent to boot.
FileChucker is helping drive the backend of several high profile entertainment sites for people like Shania Twain and Dolly Parton. We're also using it to drive backend file uploads for a multi-billion dollar banking institution. It's a great product. We've tried other "chucking" upload solutions with progress bars using flash and php, but nothing works as reliably as FileChucker.
Thank you VERY much for all of your help. You've really impressed me. We have support agreements for other software that costs thousands of dollars / year (just for the support), and most of them aren't as helpful as you have been.