This library isn't working.

I downloaded the zip file and extracted it all into a new folder in "libraries" in my Processing folder, but when I would type "import processing.OpenSimplexNoise.*;" I got the message "The import processing.OpenSimplexNoise cannot be resolved." I discovered that this was because the library and JAR file didn't have the same name, and the "lib" folder should be "library."
I fixed these two issues, and then OpenSimplexNoise appeared in the Import Library menu, but when I did, a bunch of code appeared:

`import japplemenubar.*;`
`import processing.awt.*;`
`import processing.core.*;`
`import processing.data.*;`
`import processing.event.*;`
`import processing.javafx.*;`
`import processing.opengl.*;`

and the error message:
> **More than one library is competing for this sketch**
> The import japplemenubar points to multiple libraries:
> **core** (C:\Program Files\Processing\processing-3.5.4\core)
> **OpenSimplexNoise** (C:\Users\**\Documents\Processing\libraries\OpenSimplexNoise)
> Extra libraries need to be removed before this sketch can be used.

As far as I can tell, I haven't done anything incorrectly, and whatever's happening here is probably far beyond my understanding.