I need some help with DVD architect 4.0....

I'm trying to make a video compilation with music. I added a music track to it but I cant seem to add another one after it?? so it will continue with the next song.

If I had a second track it goes below and starts at the beggining too. I don't want the video compilation to only be as long as the song I choose.

Does anybody know how I fix this so I can place a song after the second one?? This program is so complicated.................... help pleaseeeeee!!!!