What is the L, Input, and output suppose to be on the meathead schematic? Where can I find the parts in Eagle. Any help would be greatly appreciated.
Those are pads on the PCB for the LED, In and Out resp. You can find individual pins in the mbp library under the "supply pins" category.
Pardon the hi-jack. Where would one find that parts library?
Top sticky in the eagle forum
https://www.madbeanpedals.com/forum/index.php?topic=25194.0
Also, grab the effects layout library here
https://www.dropbox.com/s/j20q8jgpgq1cj0s/Effects%20Layouts%20Library%202.0.zip?dl=0