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.
On their third album -- and first to be released simultaneously in Europe and the U.S. -- Opeth continues to refine their epic, progressive death metal style, still replete with harmonized leads and acoustic passages. My Arms, Your Hearse flows logically from one composition to the next, and the mostly long songs have enough variation in texture and mood to hold the listener's interest fairly consistently.