Audio Player buttons not visible in PhoneGap Application

I am developing a Phonegap application of a site which is based on the WordPress. The site is sending me a JSON which is filled with the content. The problem is that the audio is also coming in the content. The audio is able to play in the application but there are no control buttons visible on the player. Just a big black bar comes with a seek when the songs is been completely loaded into the application.

Can any one help me to make those buttons visible. Already tried making changes to .htaccess file and tried changing the core media file icons from SVG to PNG.

But nothing worked. Can any one help out ?

WordPress version 3.7.1