First, here are the catalog cheats for Ruby and the Ruby:
Dark Detective’s Coat – Page 4
Noir Background – Back Cover
Here is the cheat to get the Ruby pin:
The picture tells you what you have to click. It has to be in that order or it will not work.
And here is what part of the Dock looks like:
It is setting up for the Music Jam! Some more rooms are also setting up like the Beach, Iceberg, and there are some others.