Using Roon (or alternate sources) to Stream to Amazon Echo Speakers

For those interested in the subject, the following post on the Roon forum may be of interest:

Use Roon to stream music to Amazon Echo speaker

The ability to perform this function was made possible by the fairly recent release of WiiM devices. Thereafter, the ability was codified by Roon, when it made the WiiM Pro: "Roon Ready Certified".