DSF Files Grouping tag not displaying

[simoncn]

Tags in FLAC files have a name and a value. You can use any tag name you want and assign any meaning you want to that name, providing complete flexibility.

With DSF files, things are different. These are tagged using ID3v2 frames which are much more constrained. Each tag name (ID3v2 frame) has a specific meaning defined by the ID3v2 specification and should not be used for other purposes. There is also a "catch-all" frame that allows you to use any tag name that doesn't have a standard meaning for any purpose of your choosing.

In ID3v2, the FILETYPE tag corresponds to the TFLT frame. You are trying to use this frame for something different from its meaning in the ID3v2 specification and this is why there is a problem. Instead, you can define another tag with no special ID3v2 meaning (for example, CHANNELS) and use this to hold the values Stereo or Multichannel.

Another approach is to use the MinimServer special tag #AudioChannels. If you have enabled this tag in indexTags, MinimServer reads the audio data in the file and automatically sets the tag value to '2' for stereo and '5.1' for multichannel. This works for all file types including FLAC and DSF.