These are fixed and submitted to the App Store in version 5.0.14:
* Folder unread list should only show unread articles belonging to the folder contents
* Sometimes the feedHopper media player control toolbar is below the screen (only when you enable autoplay for podcasts)
* Memory leak when using the next/prev tracks
If you have other issues, just email support or post here
Thanks for your feedback, and apologies up front for the inconveniences