EMACHINES DESK TOP ,WINDOWS XP2

hi,i have downloaded kaaza gold,got some music i like,,try to burn with wmp..11..doesnt reconise i have CLEAN CD IN CD ROM,,why?? i have tried also with roxio,and nero..why ,what do i have to do to get my music burned to cd?? please help me..in laymans terms,,me 62yrs,not technical..but bright,,thanks..