i might have not been clear in my original question, let me elaborate:

GetSceneItemList returns all Sources within a Scene. I am trying to get all Audio devices for a Scene.

i have a Scene called Test
Within Test i have 2 Sources called Color Source 1 and Color Source 2.
In Audio mixer i have 2 items Desktop Audio and Video Capture Device.

I also have a Scene called Test 2.
Within Test 2 i have 1 Source called Color Source 3
In Audio mixer i have 1 item called Mic/Aux

GetSceneList returns 2 item: Test and Test 2
'GetSceneItemList', { sceneName : 'Test'} returns 2 items: Color Source 1 and Color Source 2
GetInputList returns All Audio devices: Desktop Audio, Video Capture Device and Mic/Aux

How do i get only the audio devices associated with the first scene 'Test'?