i downloaded it but its requesting for registration code

i'm planning to buy Nokia lumia 720.....
I like playing farmville2, cafeland, etc games on fb, so can I play them on my nokia phone??

There seems to be some program recording  YouTube video to mp3 or other audio format.
How do I do that free?

Can check and delete all the unwanted songs in my itunes library at once? I don't want to do that one by one?

My brother is planning to buy some popular & open world video games such as assassin's creed, saint row, etc. and asks help from me. Well, I know little about this field... Do you guys have any ideas?

I know 3gp is accepted on mobile, thus I converted my DVD videos to 3gp format for watching on my mobile. However, both the picture and sound quality are bad and low-quality. Then how do people watch HD videos on their phones? What is the best format for smartphones?

I have tried to download off Dailymotion and the download options aren't appearing anymore!

it seems a register code is needed to try your system or to have it work or perform its actions. can i get a code to try it for 30 days.
Or do u need to purchase the tunes cleaner b4 u can use it,  if I need to do the purchase if I purchase do I have 30 days to try your system & if I do not like it would I receive a full refund  in the 30 days if I am not happy. thanks

I have copied Audio_TS and Video_TS folders to my local drive, how can I burn these folder to another blank DVD disc and make it looks like the same DVD I copied from?