I don't have the physical unit for testing but need to know the possible inputs for "/select" command for the SA-5.
The API reference shows an example for AUX but the SA-5 has 3 AUX inputs. Not sure if "AUX_1", "AUX 1", "AUX1, etc." are acceptable.
The sources available are best derived programmatically via the /sources command, as that will ensure the precise terms the product is expecting are used. I believe the documentation for /select and /sources in the API reference should have all the information necessary for putting this together, but please do reach out with specific questions if you have them, or if this does not work for you for some reason!
<ContentItem source="AUX" sourceAccount="AUX1"></ContentItem>
<ContentItem source="AUX" sourceAccount="AUX2"></ContentItem>
<ContentItem source="AUX" sourceAccount="AUX3"></ContentItem>