| ID | Interpret | Skladba | Album | |
| 121. | David Gordon | Theory and History | Mises University |  |
| 122. | Wobbly | food theory | Media Joke v6 | |
| 123. | Dan Cavanagh | Chaos Theory | Rec. by Oregon Jazz Ensemble | |
| 124. | Dave Whitman | Domino Theory | Dave's Stories | |
| 125. | Alex Halavais | Game Theory | Intro Interactive | |
| 126. | Wobbly | final theory | Media Joke v6 | |
| 127. | Wobbly | food theory | Media Joke v6 | |
| 128. | AFI | Sacrifice Theory | The Art of Drowning |   |
| 129. | Daddy Kev | Live at Low End Theory NYC | Live at Low End Theory NYC | |
| 130. | Daddy Kev | Live at Low End Theory NYC | Live at Low End Theory NYC | |
| 131. | DrMindbender | Chaos Theory | 02 01 06 | |
| 132. | Of stars we are | Plastic perfection theory | | |
| 133. | Big Bottom Pow Wow | Sperm Count Theory | Big Bottom Pow Wow | |
| 134. | FROSTY | Chaos Theory Chapter 2 | loopzilla067 | |
| 135. | Barenaked Ladies | Big Bang Theory Theme | Big Bang Theory Theme | |
| 136. | Jörg Guido Hülsmann | Theory of Money and Credit | The Life, Times, and Work of Ludwig von Mises | |
| 137. | Roger W. Garrison | The Austrian Theory: A Summary | The Austrian Theory of the Trade Cycle | |
| 138. | Roger W. Garrison | The Austrian Theory in Perspective | The Austrian Theory of the Trade Cycle | |
| 139. | The Capstan Shafts & Dean Wells | Sleepcure Theory Advancer | Euridice Proudhon | |
| 140. | FROSTY | chaos theory chapter 3 | loopzilla084 | |
| 141. | Diefenbaker | Chaos Theory in the Kitchen | First Demo (LP) | |
| 142. | David Schafer | General Theory Expo | General Theory Expo | |
| 143. | Jay Mac | Low End Theory September 2007 | | |
| 144. | David Schafer | General Theory Expo | General Theory Expo | |
| 145. | Barenaked Ladies | Big Bang Theory Theme | IGIF Presents: Show Tunes | |
| 146. | Thomas DiLorenzo | The Theory of Political Entrepreneurship | Mises University 2005 | |
| 147. | Jay Mac | Low End Theory August 2008 | | |
| 148. | Jay Mac | Low End Theory September 2008 | | |
| 149. | Jay Mac | Low End Theory August 2008 | | |
| 150. | GamerChris | GamerChris Sings I've Got A Theory | Look Who's Back | |
