BeyondPod supports Local Feeds. Local feeds are "virtual feeds" based on local media files stored on device's SD card - for example music, audio books or voice notes. To create a virtual feed open the "Add Feed" screen (tap on the "+ Add Feed" button located on the right side of the BeyondPod's toolbar) and select "Add Folder as Virtual Feed" option. You generally need only one virtual feed as any sub folders will also appear as sub-folders in BeyondPod.
All audio/video files in this folder will appear as (virtual) podcasts and can be played using the built in player. You can use this for your music files, audio books or voice notes or any other audio or video content.