If you use Windows Vista and, when you click on one of the MP3 files above, you get the option to save the file instead of hearing it play, you may try this solution to the problem:

1.) Go to Conrol Panel, double-click "Default programs"
2.) Click "Associate a file type or protocol with a program" - it takes a few seconds to load the list.
3.) Double-click the file-type under the "name" column (such as ".mp3"). It is probably showing something already, like "Windows Media Player", but don't believe it.
4.) Now you'll have a list of "Recommended Programs". Double click the one you want such as "Windows Media Player" even though it may already be set to that. Again, it will show "loading" at the bottom of the screen for a few seconds.