OK, I have iTunes and about 50gigs of music and movies, TV, etc. How am I to know what will play on my Droid? I realize (kinda) what DRM means but the explanations given on the PDF wrt iTunes for Droid is more confusing than the question.

Can someone explain to an old veteran how to recognize which video content will play on my droid?

Same for music, sil vous plait. 

Is there an Android video feed out there just for 'us'? 

Thnx