Compact app fit in the limited space I had available and instantly showed me that my Podcasts and Audio Books were consuming 3gb of space on my phone. One of the apps (Overdrive library app) had already been set for external storage but had not migrated files downloaded into system storage prior to the setting change. When I changed the settings in the podcast app (Podcast Addict) it automatically moved the files to my SD Card. I deleted the audio book files. This isn't the first time I'd been searching the forums for help with my management  this will be the first place I look next time I'm having a storage problem.