help deleting song

[ray ray]

i put a mp3+g song on my laptop in hoster as a test for my video out & sound well now when i try to delete the song book id 1 so that i can start importing my 825 cd+g i i want my first cd+g to be disk 1 book id 1

i try to delete the mp3+g i get the following message

unable to delete c:\program files\micro technology unlimited\hoster lite\songs\you-1.kma status=2

if i try to play the file i get the following message
kma not found on hard drive