Is it possible to set a destination for streaming audio?

Just a guess here, but passing the stream sounds litterally just as it sounds. I'd figure out the ports/protocol that works, maybe it's already in the format needed. Then send the bytes to the destination ip address as they stream in. Probably via UDP packets, but not sure 100%. There might have to be some negotiation prior to that as well like handshaking your target device. Protocol documentation reading would help you out quite a bit.

If i'm not mistaken, typically the 3rd device requests the stream, connects to a server and the server sends it the data. So it may actually be easier than you think. It may just be something like passing a URL to the 3rd device telling it to stream from there, then the device connects on it's own to the stream, bypassing your android device all together. It's how i'd go about it, if possible.

Something like this i'm guessing:
codejugglers - VLC Remote/Stream

Kanaida I really appreciate your input ... so sad that because of my limited understanding I find I understand very little of what you have said!
So I must take this one piece at a time. I have been able to stream from a local folder on my S3 to my S3 applicatoin. This works fine, doesn't require ports, passwords etc., just


So next step - how do I request a stream from my local Server, which does require a logon name and password? The basic request I know should be something like:


But how do I add the user/password? And would I need to do this for every track loaded, or can it be done for a "session"?

I don't think that MediaPlayerStream will work in this case. MediaPlayerStream doesn't allow you to access the actual data. Only to play it.

How do you connect to this media box? How can you send any data to it?

The media box I'm using is a WDTV, or could also be an AppleTV.
My media server is a Synology Diskstation.

There is an app that does some of what I want, published I believe by Synology themselves. When I open it it gives me a list of all the media devices on my network (including my S3). I can then choose the destination.

The problem with the app is that its interface is missing some vital pieces (no reference to composers, Orchestras, for example) so I want to adapt my own front end.

You will first need to learn the protocol that these media boxes use.