niessenty

[FEATURE] Allow "discnumber" as a key in folder and track format

1

### Is the feature request related to a problem. Please describe it. In multi-disc albums, currently there is (seemingly) no way to split tracks up by folder, either by appending...

### Describe the bug I use the following as my folder format, so that I can have albums sorted into folders by artist folder_format = "{albumartist}/{year} - {title} [{container}]-[{bit_depth}B-{sampling_rate}kHz] [{id}]"...