I have an app playing system sounds while music is playing in the background. Here is what I know (or think I know). 1. You cannot control the volume of system sounds ... they are linked to the overall system volume. 2. When using MPMusic pla... 続きを読む
3. iPodMusicPlayer is linked to the overall system volume level. So, my strategy is to play the music with applicationMusicPlayer which I am assuming can have its own volume level. By controlling the song volume relative to the overall volume... 続きを読む