What am I doing wrong?

[Shenron]

DisplayText = "/me plays *AR - *SN"
Replace DisplayText, "*AR", MP3.Artist
Replace DisplayText, "*SN", MP3.Title
Replace DisplayText, "*AL", MP3.Album

DisplayText still returns "/me plays *AR - *SN", all MP3 varibles have the correct text in them. *sighs* - I don't see what I'm dong wrong...