The Podcast app doesn't group non-itunes files correctly on devices (but does in itunes.) How can I change this?

I tried using the Podcast App but found it didn't group non-itunes downloads correctly on the iPhone or iPad whereas with just the Music and Video apps previously, it did. I have been into the file settings and change every attribute but it still clumps them all into one groups. In itunes on the PC they do group correctly. Anyone else had this problem? Can it be corrected?

I was happy to delete Podcast app and go back to just Music & video apps but now I now fine that if I want, for example, to download TedTalk podcast I can't.