Steps to reproduce:
1. Run a workflow that creates feed preview images
2. Look at feed containing distributed mediapackage
1. No image associated with mediapackage's tracks
1. Technically RSS does not support per item images, but itunes extension does.
The search result does not have the cover field set? The images are available as attachments in the mediapackage though. So maybe there is an issue when pushing the metadata to the search service?
The ItunesFeedEntryExtension needs an image data member adding.