You can try Audacity. This program can fix the format problem. Also, it's easier to use some Apple Music converters to convert Apple Music losslessly to FlAC.
Pure Music option to convert to Apple Lossless
I am busy adding a lot of FLAC files to my iTunes library using the Pure Music "add a FLAC file" option - no problem. However, If I move a FLAC album to Playlist and attempt to burn it to a CD it burns but you cannot hear the results. Does the Pure Music "convert to Apple Lossless" option alleviate this problem?
Just not sure what kind of file it converts to Apple Lossless and will that solve my "silent CD" problem?
Just not sure what kind of file it converts to Apple Lossless and will that solve my "silent CD" problem?