Albums with multiple CDs

[simoncn]

The rules for merging album discs in different folders are explained in this section. If the album discs have DISCNUMBER tags, the same ALBUM tag value and the same ARTIST/ALBUMARTIST tag value, they will be merged in the "albums" index.

The most likely cause of the problem is that the ARTIST values don't match exactly and you haven't set an ALBUMARTIST tag value.