Heh, open and edit any infected jpg or mp3 and your likely to disable the embeded virus code 
 
Not garanteed though.
The double extension thing is a reason I NEVER have the OS hide known file extensions!  Besides it is just annoying 
 
You think that an old game being infected is bad?  It seems Microsoft released VS .net to the chineese??? marker that would compile a virus in any program it made.  OOPS!!!