"Well preserved tags" = i want when i rip a cd that picture cd, artist and songs names will be correctly write in the system.
If the option to lookup CD track information is set, the artwork and track information will be downloaded when the CD is inserted. Correct any track information that is not correct, and add track information when it is missing from JRiver's database YADB.
For the best audio quality (pc will be connect to a good hifi system), what is the good setpoint for "quality settings" (on 6 in the system / what does it mean ?) + are others points to be changed for the best audio quality?
The quality remains the same; it is lossless. The "quality settings" should really be "how hard to work at compressing the file". You can leave it at the default, or increase it for marginally smaller FLAC files. I increase mine to maximum, as 1) encoding is fast enough for me, and 2) the disk savings adds up enough for me.
The media center 16 is it better than the 15?
FLAC encoding and playback quality will be the same. If you are purchasing, then you'll be getting a 16 license anyway. But check out the new features in the MC16 beta threads.
http://yabb.jriver.com/interact/index.php?topic=62352.0
I hope my language is clear enough ?? school english !!!
Far better than my French! :-)