I originally intended to share the game to the Scratch website, but due to an incompatibility with how charts were parsed, it was never shared to the Scratch website. When I was finalizing Beta 2, I noticed that TurboWarp started exhibiting the same issue with the chart format as on vanilla Scratch, so I was forced to change the chart format to use spaces instead of tabs. Then I called it quits on the Scratch website about a month after I saved the final build for Beta 2. Since then, I have incorporated several of TurboWarp's features that vanilla Scratch just doesn't have, and that especially includes custom extensions; they allow you to do things that just aren't possible in vanilla Scratch.

So I decided to revive the original release of Project Rhythm and release its source code. You can play it at https://ntvmb.github.io/pr-original-release/, and the source code is available at https://drive.google.com/file/d/1ww_K7mLl8P-zIgit_szD81tzDyvzaiHQ/view?usp=sharing. You may use the source code as you please, but if you're going to upload it to the Scratch website (or anywhere else) please give proper credit to me (i.e. mentioning my Scratch account on Scratch, and mentioning this GameJolt account -- @ntvmb -- outside of Scratch).

Edit: It's funny how Scratch went down shortly after I posted this.

Edit 2: I discovered why I couldn't use tabs in the chart format. It's because the tab character == 0 according to Scratch. So any time the parser saw either a 0 or a tab, it treated the character as the delimiter. This wasn't the case in TurboWarp. However, it has since been changed since then to mirror Scratch.