There are 2 ways to do this the easiest is through the Practice button where you are given transposition buttons.

Search on the Internet for "Alannah Band in a Box" and download some Band in a Box songs from there, not midi songs.

Then pick one of those songs and use the practice button to transpose.

If you don't like how low or high the notes in the Melody are you can use CTL ALT 1 OR CTL ALT 2, which when held down together over the notes cause them to go up or down an octave.

John Conley
Musica est vita