Moved to contributed library questions.

See: https://forum.processing.org/topic/where-to-place-threads-and-other-forum-practices

The library is called Minim, not Maxim. And you need an import statement. Perhaps you copy-pasted this code from someone else who extended Minim in a class called Maxim. In that case you also need to copy-paste the code for this Maxim class. However it doesn't seem to have any additional functionality at first sight, so just renaming to Minim and adding the import seems the easier solution.

rect() is a method that draws a rectangular shape. If you want to store things you need to store the variables (x, y, w, h). You could also store these all together in a class which uses the rect() method in it's drawing routine.

i assume that you are referring to the Maxim  library from the coursera class right?
if i remember correctly they provided a java file not a compiled library...
do you have the Maxim.java in the same directory with your pde file?   


Anyway it seems the initializations are wrong

1. player = maxim.loadFile("");
2. player2 = maxim.loadFile("");

this means that these are inner classes

so change these lines

1. Maxim maxim;
2. AudioPlayer player;
3. AudioPlayer player2;

to these

1. Maxim maxim;
2. Maxim.AudioPlayer player;
3. Maxim.AudioPlayer player2;

and it should work...

To Ammon.Owed: 

Like this...

Code Example

1. int x = 50;
2. int y = 150;
3. int w = 100;
4. int h = 200;
5.  
6. void setup() {
7.   size(500, 500);
8. }
9.  
10. void draw() {
11.   background(255);
12.   fill(255, 0, 0);
13.   rect(x, y, w, h);
14. }
15.  
16. void mousePressed() {
17.   x = mouseX;
18.   y = mouseY;
19. }