Some of my old DFF files have DST compression and every few years I look for something that will remove the compression, some players will play them but roon and HQ player will not and have never found a conversion utility that would decompress them, dff2dsf won't, nor will any others I tried.
Yesterday, I came across Deffy -
https://www.mymymyohmy.com/software/deffy.html From the site:
Deffy converts .DFF files (either containing DSD or DST) to .DSF files or converts .DSF files to .DFF files.
Deffy can also:
o Split .DFF files (DSD and DST - uncompressed and compressed) into separate tracks (manually or with a cue sheet).
o Split .DSF files into separate tracks (manually or with a cue sheet).
o Glue separate .DFF files together, into one file.
o Strip a .DFF file from its compression (keep it a .DFF file but turn the DST into DSD).
o Reverse the channels in two channel .DFF files.
o Show the title / artist fields in a DFF (when present).
o Show the comments in a DFF (when present).
o Flip a DSF file from 8-bit per sample to 1-bit per sample and v.v.
o Validate DSF files with logging.
None of this functionality involves PCM steps.
Deffy is freeware for Windows 10 and 11, fully functional, and does not contain adware, spyware or other nuisances. However do note that the licence agreement excludes the use of Deffy for commercial purposes.
I was able to convert all of my compressed DFF files to DSF and roon sees and plays them. I reached out to the author to thank them and exchanged a half dozen peasant emails with them, hopefully this tool can help others.
Mike
