Saying "automatically", I meant that with the same settings of my project, in iOS the sound turns off automatically.
For android i make Cocoon build. With and without minifing. My music file located in "Music" folder.
"Audio" plugin silents music in pc browser tests. I made music silent before starting ads, but my last trick below.
At the right moment (on start of layout for ex.) i set variable "show_ad" to 1.
Further, i have three events:
1) "if show_ad=1 and invert(Audio is silent) then Audio set silent"
2) "if show_ad=1 and Audio is silent then run ads"
3) "On video complete" -> "set show_ad to 0"
But this have no effect.