No Icons & Audio in APK apps on Android

Hello!
I'm new here and I learn how to make text adventure games.

I made simple game and test in web-browser. All works fine!
You can see it here:
http://strelyalki.su/surv/index.html

Then I'm building Android application.
I used PhoneGap and got this APK:
http://strelyalki.su/surv/survivor.apk

This APK has been installed and run successfully.
But in game I did not hear the music & did not see the icons on the left menu.

So, what is the problem here?

Thanks. Sorry for my bad English.