How shall I choose between Samsung Galaxy S4 and iPhone 5S?

Movies and the roles/actors (actress)

I recently bought some music on my I phone. Now I have a new computer. Who can tell me how to sync the music library on both my computer and my phone without deleting all of the newly bought music. I tunes tutorials are useless to me... don't know what to do :(

Why is the estimated file size is over four times the source?  Source MP4 is 730 MB, but the estimated once imported is close to 4 GB.

I DOWNLOADED itunes but when i go on itunes.com, how can i get to my account, and my files, library?!??!

All the video players on my computer suddenly couldn't open any avi video files. I don't know when does it happens. I've tried Windows Media Player, Quick Time, VLC Media Player and DivX. I installed K-Lite_Codec_Pack_660_Full instead of teh ffdshow. But these didn't change anything. I also tried the Shark007 5.8.6 codec pack but it still didn't work. My computer runs Windows XP Pros 2002 SP3. Please help me, thank you!

What's the differences of the following:
DVD-R, DVD+R, DVD-RW, DVD+RW and DVD-ROM?

to register the program and to start the converter you have to input the license email? the license email is a normal email and if I copy this email, the programm answers "wrong format". What should I do?

Audio converter for mac seems to be stuck whilst trying to convert any audible file to m4a

I am trying to read BD files in from a 3d Blu Ray with the new purchased Blu-Ray Ripper of Win.  The software looks like it is starting to read the files and then I get an error stating that the software will not run on my computer because either my computer is banned or the registration code is banned.  Please let me know what this message means.  It is only installed on one computer, so I am not sure what the issue is?
Thank you,
Rick King
rking@forestridgecolorado.com