Implement Audio Streaming Capability

[markjamesm]

Need to create an open stream dialog box which allows users to type or copy/paste in an audio stream to play. Method OpenStream(url) will be used to play streams.

This method will need exception handling for non-existent files.

[markjamesm]

This issue discussion for NAudio looks like a good jumping off point. Need to test this code as a proof of concept:

var url = "http://media.ch9.ms/ch9/2876/fd36ef30-cfd2-4558-8412-3cf7a0852876/AzureWebJobs103.mp3";
using(var mf = new MediaFoundationReader(url))
using(var wo = new WaveOutEvent())
{
wo.Init(mf);
wo.Play();
while (wo.PlaybackState == PlaybackState.Playing)
{
Thread.Sleep(1000);
}
}

[markjamesm]

This feature has been implemented already, closing this issue now.

For the copy/paste stream bug, please refer to #19