Incorrect FLAC and M4A 'Title' Metadata Tag when Title of Track Has Special Characters

[ebb-earl-co]

In order to avoid writing audio or video files to disk with illegal characters (especially on Windows), a number of characters are replaced. This should only affect the file name on disk, not the metadata tag (TITLE for FLAC; \xa9nam for M4A), however this seems not to be the case.

For example, the song/album with the title "02:07" (as in, a time of day) is incorrectly specifying the track's title metadata:

Input #0, flac, from '01 - 02:07 [CD].flac':
  Metadata:
    ALBUM           : 02:07
    album_artist    : Joep Beving;Maarten Vos
    REPLAYGAIN_ALBUM_PEAK: 0.893829
    REPLAYGAIN_ALBUM_GAIN: -0.47
    ARTIST          : Joep Beving;Maarten Vos
    ARTISTS         : Joep Beving;Maarten Vos
    BARCODE         : 840427243532
    COPYRIGHT       : Sonderling BV & Maarten Vos Music, under exclusive license to LEITER
    DATE            : 2024-05-31
    ISRC            : DEXN82434865
    MEDIA           : Digital Media
    TITLE           : 02 -07
    REPLAYGAIN_TRACK_PEAK: 0.893829
    REPLAYGAIN_TRACK_GAIN: -0.47
    COMPOSER        : Joep Beving;Maarten Vos
    PRODUCER        : Joep Beving;Maarten Vos
    COMMENT         : http://www.tidal.com/track/361515597
    DISCTOTAL       : 1
    DISC            : 1
    TRACKTOTAL      : 1
    track           : 1
  Duration: 00:03:20.76, start: 0.000000, bitrate: 561 kb/s
  Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
    Side data:
      replaygain: track gain - -0.470000, track peak - 0.000021, album gain - -0.470000, album peak - 0.000021, 
  Stream #0:1: Video: mjpeg (Progressive), yuvj444p(pc, bt470bg/unknown/unknown), 1280x1280 [SAR 72:72 DAR 1:1], 90k tbr, 90k tbn (attached pic)
    Metadata:
      comment         : Cover (front)
      title           : Album Cover

Notice that the ALBUM metadata value is unaffected; it's the TITLE value that is incorrect.

[ebb-earl-co]

This should be fixed with #179