[loomi]

Nice. Is there a way to fetch the main out audio?

It is something I am looking already some time for a multiplatform way to get the main mix stream.

[judofyr]

The example on the front page includes this line:

    int default_out_device_index = soundio_default_output_device_index(soundio);

Is that what you're looking for? Or something else?

[loomi]

Can I then get everything what is played by all applications on this device. Like fetch and send through the network? (Not pushing audio to the main out.)

[AndyKelley]

You can do that on systems that support it, like JACK and PulseAudio.

[loomi]

So Linux only?

I guess it would be a pretty unique addition to have a method to grab the main mix on Windows, Linux, and OS X in a common way!

[voltagex_]

Some Windows drivers had a "Stereo Mix" device under Recording to grab the currently playing audio. There's also http://software.muzychenko.net/eng/vac.htm but it really needs a FOSS competitor.

[AndyKelley]

Right, so on systems with "Stereo Mix" device, you could use libsoundio to capture from it.