Now that you’ve clicked on the “Apply to Become Author” and the “I’m serious!” buttons, you need to either log out and log back into C3U, or just click on the “File Management” tab. There you will see a new pop up with some terms you must agree to for using C3U. Once that’s out of the way, you’ll see a button on the far right of the screen (you may need to widen your browser before it appears) letting you know your account is “maxed out” and to request an upgrade. That will be your first request for space. Once approved, you’ll be able to start uploading your customs.
Feel free to ask here again if anything seems not to work.
You are about to leave Rhythm Gaming World and access the external songs DB. While no song or file sold for commercially available videogames is hosted there and only fan generated content is allowed, Rhythm Gaming World has no direct control over the database and no files are hosted here. Alright, we had to made you aware of this, now you can visit the database!