Click on the field header labeled "Extensions" (to order the list by extension)
Scroll down and click on the entry for "ASX"
Click on the "Change Action" button
Select the top radio button labeled "Open them with the default application"
Repeat steps 6-8 for every instance of the ASX extension in the list. When you are done, click "Close" then click "OK" in the options window. Audio samples should now play properly in Windows Media Player.
Show The Jesus Lizard / CD / 1994 People Get Ready The Mooney Suzuki / CD / 2000 Renegades Rage Against the Machine / CD / 2000 Trophy Made Out of Babies / CD / 2005 Double Death Coachwhips / CD / 2006 Hellyeah Hellyeah / CD / 2007 Snake Wine Light Pupil Dilate / CD / 2007