ZITAT(RoronoaDSanji @ Mar 19 2012, 00:53)
im not sure what you meant in the end, english is not my first language
do you mean like CD2 files will be picked up by mp3tag, but CD1 files wont?
No, what I meant: if you have loads of files that got the "1" set for DISCNUMBER but there is only 1 CD and you do not want to get these files moved to the "CD1" folder, then the numbering scheme for CDs will not help you as MP3tag cannot distinguish between files that got DISNUMBER set to "1" because there is another CD and those which only "accidently" got set the DISCNUMBER.
You can easily make MP3tag move all files that got a value set in DISCNUMBER. But this will move all files without exception. So there is no way to say something like "but only if there is a number 2 and/or 3 as well".
In general: I do not think that it is an excellent idea to store CD-structures in folders in the file system. If you look at these files with a player, the player will mix up the files anyway as hardly any player looks at DISCNUBMER. So you will get the number 1 from the first disk, then the number 1 from the second disc, then the two number 3s and so on.
I applied a different scheme: I set the discnumber but also modify the track number.
I multiply 100 by the DISCNUMBER and add it to the track number, so that e.g.
1 from dsic 1 becomes 101,
1 from disc 2 becomes 201 etc.
THis is done with an action "Format tag field" for TRACK and the format string
This keeps the order from the various discs. Also it indicates that I have tracks from a multi-CD-set. And if I want to resort to the old numbering I can easily remove the discnumber by using $DIV or $MOD.