error: redefinition of 'void setup()

[Agent47]

Whenever I try to use any of the sample code I find in the playground, I get an error when I try to compile the code.  Here it is:

In function 'void setup()':
error: redefinition of 'void setup()' In function 'void loop()':

What am I doing wrong?

I am currently trying to use the code for a piezo player from this link:
http://arduino.cc/en/Tutorial/Melody

[mellis]

Do you have two tabs in your sketch?  When you drag things into the environment, it adds it to the current sketch when you may want to simply open it.

[BetaDelta]

This can be common. An assumption is that tabs are for new sketches. But they only open another file for some more code; for the same sketch. Meaning you only declare void setup() and void loop() once.

So you may have declared this more than once leading to this error.

[patgadget]

I try compiling it and everything was fine?
Patgadget
Montreal