By Mayo Clinic Staff. Alcohol intolerance can cause immediate, unpleasant reactions after you drink alcohol. The most common signs and symptoms of alcohol intolerance are stuffy nose and skin flushing. Alcohol intolerance is caused by a genetic condition in which the body is unable to break down alcohol efficiently.
About iTunes library files. iTunes uses iTunes library files and your iTunes Media folder to organize and store your music and other media. Your iTunes library files track the media you add to iTunes, how you've organized it, and other information such as playlists, play counts, and song ratings. About the iTunes Library.itl file.
Part 1. iTunes Supported Video formats: MP4, MOV, M4V. According to Apple, iTunes supports any video format that works with QuickTime and files purchased or downloaded from iTunes store. That means if your video files have a .mov, .m4v, or .mp4 file extension, generally you can play them in iTunes. However, there are also limitations on video codecs, sample rate, etc. So if your .mov, .m4v or .mp4 files are rejected by iTunes, that may be because of a codec problem.