While playing music with an app other than the Music Player, you may hear overlapping sounds.

Depending on the other music app you are using (other than the Music Player), the   (play/pause) button on the unit may correspond for both options. 

That means that music may overlap, since the Music Player and the other app may both start when pressing the  (play/pause) button. 

To play music on a different app than the Music player:

1. Press the    (play/pause) button on the Walkman, then pause the music that has been overlapping.
2. Play or pause the running player app by operating on the app screen.