Had some trouble finding it as well.
Once you’re logged into C3 universe, click the button that says “Hi, [your username]” in the top right.
The drop down menu will show your magma ID.
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!
