Ionic Native Audio not working

Ionic Native
1

I am trying to run an audio on a specific event when app is open (foreground). When app is not running (background or force closed) this is taken care of by push notification

This is what i am doing in my constructor

this.platform.ready().then(() => {
    this.nativeAudio.preloadSimple('uid134199', 'audio/newOrder.mp3');
    this.audio = {
        key: 'uid134199',
        asset: 'audio/newOrder.mp3',
        type: 'native'
    };
})

This is what i do at that particular event

this.nativeAudio.play(this.audio.asset).then((res) => {
    alert(JSON.stringify(res));
}, (err) => {
    alert(JSON.stringify(err));
});

Does not work whatsoever, neither success alert, nor failure alert.