My vocals come in prematurely when recorded over a song

[northlander]

admin
thanks again for getting back to me as far as the ruffle feathers not so i enjoy being a microstudio customer and enjoy the program ,microstudio has help me to learn how to play guitar i took guitar lessons and play my guitar every day and use microstudio everyday and when there is a problem and i can't use microstudio to record as i'am having now to its does bother me,however i know you work hard to please us as customers and to give us the best product on the market.
as to the recording all i do is record myself i use my kma files for the music
and playback the recording .when i record it goes into my c drive as a wave file is this the proper format.
thanks bob