the free sounds is not designed for EWI USB but for ARIA Player and Plogue sforzando.
You can however try and update your latest ARIA Engine to 184.108.40.206 (see main support page) but you wont see the new UIs appear in there,
Here is a free one too https://www.youtube.com/watch?v=re5-YkCwnNQ download link in the description.
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