I needed to modify a ton of mp3 files today, and thought I would document it for me, and, for you.

rename all files based on id3 tags ** use with caution

eyeD3 --rename '$artist - $album - $title' *.mp3

RENAME ALL FILES IN ALL SUB DIRS BASED ON FILE NAME ** use with caution

find . -name *.mp3 -execdir eyeD3 --rename '$artist - $album - $title' *.mp3 {} \;

DELETE FILES OF SPECIFIC TYPE AND DOTFILES

find . -type f -name ".*" -delete
find . -type f -name "*.m3u" -delete
find . -type f -name "*.nfo" -delete
find . -type f -name "*.sfv" -delete
find . -type f -name "*.zip" -delete

SET ALL TAGS TO ID3 Version 2.4

find . -name *.mp3 -execdir eyeD3 --to-v2.4 {} \;

REMOVE GENRE AND COMMENTS FROM ALL FILES

find . -name *.mp3 -execdir eyeD3 --genre= --remove-object Comments {} \;

SET ALL GENRES TO A SPECIFIC GENRE (SEE BELOW FOR LIST)

find . -name *.mp3 -execdir eyeD3 --genre "Drum & Bass" {} \;
find . -name *.mp3 -execdir eyeD3 --genre "Breakbeat" {} \;
find . -name *.mp3 -execdir eyeD3 --genre "Rock" {} \;

RUN DETOX TO RENAME ALL FILES (AS A TEST RUN)

detox -n -r -v -s utf_8 /mnt/gluster/Music

ACTUALLY RUN DETOX TO RENAME ALL FILES

detox -r -v -s utf_8 /mnt/gluster/Music

RENAME ALL – TO _ USING RENAME

find . -name *.mp3 -exec rename - _ '{}' \;

GENRES

# eyeD3 --plugin=genres
  0: Blues                               96: Big Band
  1: Classic Rock                        97: Chorus
  2: Country                             98: Easy Listening
  3: Dance                               99: Acoustic
  4: Disco                              100: Humour
  5: Funk                               101: Speech
  6: Grunge                             102: Chanson
  7: Hip-Hop                            103: Opera
  8: Jazz                               104: Chamber Music
  9: Metal                              105: Sonata
 10: New Age                            106: Symphony
 11: Oldies                             107: Booty Bass
 12: Other                              108: Primus
 13: Pop                                109: Porn Groove
 14: R&B                                110: Satire
 15: Rap                                111: Slow Jam
 16: Reggae                             112: Club
 17: Rock                               113: Tango
 18: Techno                             114: Samba
 19: Industrial                         115: Folklore
 20: Alternative                        116: Ballad
 21: Ska                                117: Power Ballad
 22: Death Metal                        118: Rhythmic Soul
 23: Pranks                             119: Freestyle
 24: Soundtrack                         120: Duet
 25: Euro-Techno                        121: Punk Rock
 26: Ambient                            122: Drum Solo
 27: Trip-Hop                           123: A Cappella
 28: Vocal                              124: Euro-House
 29: Jazz+Funk                          125: Dance Hall
 30: Fusion                             126: Goa
 31: Trance                             127: Drum & Bass
 32: Classical                          128: Club-House
 33: Instrumental                       129: Hardcore
 34: Acid                               130: Terror
 35: House                              131: Indie
 36: Game                               132: BritPop
 37: Sound Clip                         133: Negerpunk
 38: Gospel                             134: Polsk Punk
 39: Noise                              135: Beat
 40: AlternRock                         136: Christian Gangsta Rap
 41: Bass                               137: Heavy Metal
 42: Soul                               138: Black Metal
 43: Punk                               139: Crossover
 44: Space                              140: Contemporary Christian
 45: Meditative                         141: Christian Rock
 46: Instrumental Pop                   142: Merengue
 47: Instrumental Rock                  143: Salsa
 48: Ethnic                             144: Thrash Metal
 49: Gothic                             145: Anime
 50: Darkwave                           146: JPop
 51: Techno-Industrial                  147: Synthpop
 52: Electronic                         148: Abstract
 53: Pop-Folk                           149: Art Rock
 54: Eurodance                          150: Baroque
 55: Dream                              151: Bhangra
 56: Southern Rock                      152: Big Beat
 57: Comedy                             153: Breakbeat
 58: Cult                               154: Chillout
 59: Gangsta Rap                        155: Downtempo
 60: Top 40                             156: Dub
 61: Christian Rap                      157: EBM
 62: Pop / Funk                         158: Eclectic
 63: Jungle                             159: Electro
 64: Native American                    160: Electroclash
 65: Cabaret                            161: Emo
 66: New Wave                           162: Experimental
 67: Psychedelic                        163: Garage
 68: Rave                               164: Global
 69: Showtunes                          165: IDM
 70: Trailer                            166: Illbient
 71: Lo-Fi                              167: Industro-Goth
 72: Tribal                             168: Jam Band
 73: Acid Punk                          169: Krautrock
 74: Acid Jazz                          170: Leftfield
 75: Polka                              171: Lounge
 76: Retro                              172: Math Rock
 77: Musical                            173: New Romantic
 78: Rock & Roll                        174: Nu-Breakz
 79: Hard Rock                          175: Post-Punk
 80: Folk                               176: Post-Rock
 81: Folk-Rock                          177: Psytrance
 82: National Folk                      178: Shoegaze
 83: Swing                              179: Space Rock
 84: Fast Fusion                        180: Trop Rock
 85: Bebob                              181: World Music
 86: Latin                              182: Neoclassical
 87: Revival                            183: Audiobook
 88: Celtic                             184: Audio Theatre
 89: Bluegrass                          185: Neue Deutsche Welle
 90: Avantgarde                         186: Podcast
 91: Gothic Rock                        187: Indie Rock
 92: Progressive Rock                   188: G-Funk
 93: Psychedelic Rock                   189: Dubstep
 94: Symphonic Rock                     190: Garage Rock
 95: Slow Rock                          191: Psybient