Hey,
you can add following code in functions.php:
// THIS INCLUDES THE THUMBNAIL IN OUR RSS FEED
add_filter( 'the_excerpt_rss', 'inoplugs_insertThumbnailRSS' );
add_filter( 'the_content_feed', 'inoplugs_insertThumbnailRSS' );
function inoplugs_insertThumbnailRSS( $content ) {
global $post;
$slides = avia_post_meta($post->post_id, 'slideshow');
if ($slides){
$postimage = avia_image_by_id($slides[0]['slideshow_image'],'thumbnail');
$content = '<div>' . $postimage . '</div>' . $content;
return $content;
}
}
You need to clear the browser cache to see any feed changes.