I just downloaded the new Muse album from HDtracks in FLAC format and wanted to modify the tags. I've done this in the past with files I've downloaded from HDtracks and have never encountered a write error. The error that pops up is " File xxxx.flac cannot be opened for writing". I'm using Mp3tag v2.90a. As far as I can tell, the files are not write-protected. The only difference I can see is that the Muse files were encoded using Lavf58.12.100 and other files which I can write to were encoded with Lavf57.34.103 and others.
Any ideas? I've already emailed HDtracks asking about this. Thanks!