How to allow audio from outside the app Play while the app is running

Audio and Graphics
#1

My app Word Hunt - Word Search was Amazon’s Free app of the day yesterday.  and one of the comments someone left was

So this app does exactly as it says, a word search with steam punk feel. Unfortunately, what could be a great app to fill in time becomes an annoyance when it cuts out 3rd party audio apps. You either have the choice of their audio or no audio at all. This is extremely annoying as simple time fillers like this are what I use when I’m listening to audio books and similar things. To me this whole app is broken because a word search alone isn’t entertaining enough on its own for me to take time and just search. This of course is personal opinion, but the need to allow 3rd party audio is huge.

So how do i Allow for this in Corona?

#2

I came across this the other day - works as expected, although would be great if you could fade outside music to play your own sound effects but I haven’t found a way yet:

-- Set the audio mix mode to allow sounds from the app to mix with other sounds from the device if audio.supportsSessionProperty == true then     --print("supportsSessionProperty is true")     audio.setSessionProperty(audio.MixMode, audio.AmbientMixMode) end  
#3

I came across this the other day - works as expected, although would be great if you could fade outside music to play your own sound effects but I haven’t found a way yet:

-- Set the audio mix mode to allow sounds from the app to mix with other sounds from the device if audio.supportsSessionProperty == true then     --print("supportsSessionProperty is true")     audio.setSessionProperty(audio.MixMode, audio.AmbientMixMode) end