The transcriber is a great program that has had a bunch of technical difficulties over the years. The login system is a mess. I'm going to get rid of the login system entirely and turn this into a desktop app. You'll be able to browse for an mp3 file and it'll just store it locally so you won't have to upload it again. It'll also take a url to an mp3 file. I'll also combine it with the loop mixers. I've got this half done, but with all the things I'm doing, I haven't had time to finish it. I'm aiming to have this done sometime in April.
View the demo video on the bottom of this page.
The Flash app is below. Click on the Windows style File menu to get started. I will make a pure HTML MP3 uploader when I have the time.