et ici pour MinimServer (que tu pourrais ou as installé sur ton nas, sinon à voir selon l'application serveur que tu utilises) :
https://minimserver.com/ug-browsing.htm ... c%20albums
Multidisc albums
Some albums contain multiple discs (physical CDs). For some multidisc albums, you might want to see a view of the album contents which includes information about which items are on which discs. For other multidisc albums, you might want to view the entire album contents as a single list in the same way as you view a single-disc album. MinimServer supports both of these options.
If the showAllDiscs option of the serverOptions property is set to true (see this section), all multidisc albums in your library are shown as separate discs with no disc merging. If the showAllDiscs option is set to false or omitted, disc merging is applied to selected albums as described in the remainder of this section.
For albums whose contents are tagged with the same album title and contain more than one DISCNUMBER tag value, MinimServer displays the album contents as a merged list of items with no disc information shown. The tracks are sorted first by disc number and then by track number. The tracks are renumbered to match the order of the merged list, so if disc 1 of the album has track numbers 1 to 10 and disc 2 has track numbers 1 to 4, the tracks from disc 2 will be displayed as track numbers 11 to 14.
If you want to see the album contents displayed as separate discs, you need to use additional tags. The simplest way to do this is to tag the album tracks with the album title suffixed by a disc identifier in the form [disc <n>], (disc <n>) or , disc <n>, where <n> is the disc number. For example, you might tag the tracks from the first disc of the album Ummagumma with the album title 'Ummagumma [disc 1]' and the tracks from the second disc with the album title 'Ummagumma, disc 2'. If you do this, MinimServer displays the album as a list of items grouped by disc number with selectable headings marking the start of each disc, and no track renumbering. These disc headings are displayed as '>> Disc <n>' choices, where <n> is the disc number, and they can be selected to add an individual disc to the playing queue or view the disc contents. See the Hide Contents choice section for more information about how to use these '>> Disc <n>' choices.
Note: You can't play a disc directly from the multidisc album contents page. If you try to do this, the disc will appear to be empty and no tracks will be played. Instead, you need to select '>> Disc <n>' from the multidisc album contents page and select the disc for playing from the page that is displayed.
In some cases, an album disc may have a meaningful subtitle as well as a disc number. If you tag the tracks from this disc with the disc subtitle by using the DISCSUBTITLE tag, the album contents will be displayed as separate discs and the selectable heading for this disc will be displayed with the subtitle name instead of the disc number. For example, you might tag the tracks from the first disc of the album Ummagumma with the DISCSUBTITLE tag value 'Live' and the tracks from the second disc with the DISCSUBTITLE tag value 'Studio'. If you do this, the selectable disc headings for this album will be displayed as '>> Live' and '>> Studio' instead of '>> Disc 1' and '>> Disc 2'.
As an alternative to adding a DISCSUBTITLE tag, the disc identifier suffix in the album title can be specified as [disc <n>: <subtitle>] or (disc <n>: <subtitle>) or , disc <n>: <subtitle>.
For information about different options for grouping the contents of multidisc albums into folders, see the Albums and folders section.