Hi hichnaj,
We ran a series of tests using both the html5 audio component similar to your example code and the native cordova audio api. In both cases on fast wifi and lte networks initial load and start of playback was 20s & 30s respectively. This is 10X slower than similar tests performed on ios7 devices. We are planning to look into this a bit closer but on all android devices and os versions streaming using your audio src was very slow to initially load. I have opened a bug for more research. We will update you once we have isolated the root cause.