Problems when importing MP4 file to iTunes library "After updating to itunes 12 as i now updated my iphone to ios 9 i tried adding in a few mp4 files and itunes does absolutely nothing. I go to file>Add File to Library...>select the mp4 and then nothing happens. These films are DVD movies that ive used DVD decryptor to rip them then use Handbrake to Compress them. Both mp4 files work and ive ope...