Pocket Tunes now displays all URLs that a station has contained in its link. See this Knowledge Base article for more information about that.

This means that when you add a station to a playlist, then save the playlist, then subsequently move the playlist to another location (eg. from the SD card to main memory or vice versa) the playlist will change to show all the URLs contained in the station's link. If there is only one, nothing will change, but if there is more than one you may see as many as 5-7 or more links for that one station. Or you may see links to stations related to the station you added to the Playlist. This is controlled by the station. If they put extra addresses in the link then Pocket Tunes will display them, currently there is no way to exclude them. Note that the playlist is ONLY changed when you move it from one storage location to another.