Renaming based on EXIF data fields is superbly useful. This made the folder collections now finally usable. I used it to rename zillions of old pictures stored in many folders, taken by old iPhone cameras and DSLR cameras, renaming them to show camera name as well as shooting date/time, followed by the original image file name. I have recently made use of the incredibly powerful and easy-to-use 'multirename' function. In fact some users may only have FLAC or MP3, but supporting both tag types in 'multirename' seems very useful. => I would like to suggest that support for the main FLAC-tag data fields be added to the dropdown list of fields available for 'multirename', in order to be able to use it for a music collection of both MP3 and FLAC files like I do, which probably is not at all uncommon. ID3v1 and ID3v2) are also present in FLAC tags. These FLAC tags ARE NOT ID3 TAGS USED FOR MP3 FILES, but all the same fundamental fields present in MP3 tags (i.e. It is the only tagging system required and guaranteed to be supported by FLAC implementations. They are called alternately 'FLAC tags' and 'Vorbis comments'. FLAC has it's own native tagging system which is identical to that of Vorbis.

Mp3tag flac