Hey. I decided to tab this because there are literally no Louden Swain chords on the internet. 
But now there are :)

Intro: B A B A

B                        A
They say that nothing in our lives is free 

D (strum the D (heh) once)
Keeps me runnin? 

B                    A
Then they tell me that my saving grace 

D
Is I look so stunnin? 

B               A
I could indulge all the evil ways 

D
My mind is going 

B                 A
Then I?m liable for the human race 

G
Keeps me running, Look so stunning 

A
Soaking up the Gamma Rays

B A B A

(The next verse is the same as the first verse)
B             A
Preparing for an early grave

D 
Gotta do somethin? 

B               A
Dry food will be fun to consume
 
D
Won?t it be something? (WON'T IT BE SOMETHING!?!?!?) 

B                      A
And then I?ll illustrate my great escape 

D
If the end is cominnnnnnnnnn

B               A 
2012 so the Mayans say 

G
 It keeps us running, Keeps us sunning 

 A
Soaking up the Gamma rays


B  Bb A G


G                     A                  E
There?s a thought that when it does come the flood will set us free 


G                     A
But we don?t know 

                    E
Help we don?t know anything

B
Any

(use bar chords here! Slowly move up the fret board, and use these as more of a guideline)
C   C#   D   D#   E   E#  F  F# 

thiiiiiiiiiiiiiiiiiiiiiiiinnnnnggg

A E B
  
 A                                   E          
It?ll take a lot lot more than that 


   B
To set us free


(Repeat for four more times)


B A B A


B                        A
They say that nothing in our lives is free 


D (Don't strum the D once for these two times; play it normally)
Keeps me runnin? 


B                    A
Then they tell me that my saving grace 


D
Is I look so stunnin? 


G 
Keep on sunning 


A
Soaking up the Gammaaaaaaa Raaaaays


 A                                   E          
 But it?ll take a lot lot more than that 

  
 B
To set us free

(Repeat that part until the end.... or until your hand falls off)