rosesinny

I have two mp4 files that I created with Photostage Slideshow, the first has a short music file in it, the rest of the video is sound from the movie clips. The second has one  song file in it. The songs play in each file separately, but when I bring them both into another project file to combine into one video, the music does not play. 

I have two different videos that each have an audio file included. I tried combining the two into one new project but the audio for each does not play. Is it not possible to do what I am trying to do?