I had this issue when I first upgraded to ios 6, and all I had to do was to go into the 'get info' and changed the music type to 'music video' and the videos will show up on a playlist under the music app.
i tried the same thing with ios 7 with no luck. any help would be great. thank you.
i tried the same thing with ios 7 with no luck. any help would be great. thank you.