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.
Whether or not these 22 songs inspired the Grateful Dead or not, this would still be a nice collection, and it's surprisingly varied, including blues pieces, jug and string band reels, country and rockabilly tunes and more. Any disc that has gems as varied as Slim Harpo's "I'm a King Bee,"Hank Williams' "I'm So Lonesome I Could Cry,"the Mississippi Sheiks' "Sitting on Top of the World," and Furry Lewis' "Kassie Jones" is worth checking out even without the Grateful Dead angle.