hi there, thought id introduce myself quickly. names joe from uk and own a 32gb playbook and loving it. Im an avid reader and noticed that people couldnt get youtube to continue playing when tabbed in browser. i found that if you swap tabs quickly before your video loads it will auto play. didnt see this anywhere else. hope it helps.
edit* you need to manually refresh the video then swap the tab ^^. pb + 1
there is another way posted previuosly.open 3blank tabs, go to youtube on the first, then swipe down from top bezel, close blank tab 3. you will default to blank tab 2 while tab 1 runs youtube non stop. now u can browse anywhere else with tab 2