Multi Disc Releases: Album field
Whilst is better to for Multi Discs releases to add the discno or disc subtitle to the Disc SubTitle field the Disc SubTitle is not well that supported by music players so an alternative is to add the details to the Album field with this option . Multi-disc releases sometimes give an actual name to each disc and this can be added to the release title by setting the option to Add Disc Subtitle if Disc has Title to Album field or Always add Disc Title or Disc No to Album field .