Here's an example M3U playlist from Music app on my Mac Pro:

#EXTM3U
#EXTINF:481,Pick Me Up (Say Goodbye) - Al Kent
/Volumes/DJContent/DJ Trax/Disco/Pick Me Up (Say Goodbye).mp3
#EXTINF:376,Timba (Full Intention Club Mix) - AWA Band
/Volumes/DJContent/DJ Trax/House - Latin/Timba (Full Intention Club Mix).mp3
#EXTINF:269,Glue (Original Mix) - Bicep
/Volumes/DJContent/DJ Trax/House - Intelligent/Glue (Original Mix).mp3
#EXTINF:347,Star Eyes (Original Mix) - Cosmo & Dibs
/Volumes/DJContent/DJ Trax/Hardcore/Star Eyes (Original Mix).mp3
#EXTINF:409,TechnoTrance (Paradise Is Now) (Original Mix) - D-Shake
/Volumes/DJContent/DJ Trax/Rave/TechnoTrance (Paradise Is Now) (Original Mix).mp3
#EXTINF:519,What Am I Here For? (Original NDATL Vocal) (Danny Krivit Edit) - The DangerFeel Newbies
/Volumes/DJContent/DJ Trax/House - Soulful/What Am I Here For_ (Original NDATL Vocal) (Danny Krivit Edit).mp3
#EXTINF:242,Motion Beats - David Alvarado present Bombagrooves
/Volumes/DJContent/DJ Trax/House - Tech/Motion Beats.mp3
#EXTINF:574,Motions - David Alvarado present Bombagrooves
/Volumes/DJContent/DJ Trax/House - Tech/Motions.mp3
#EXTINF:449,If You Really Love Someone (Original Mix) - Liberty City
/Volumes/DJContent/DJ Trax/House - Deep/If You Really Love Someone (Original Mix).mp3
#EXTINF:445,If You Really Love Someone (Vapor Rub Dub) - Liberty City
/Volumes/DJContent/DJ Trax/House - Deep/If You Really Love Someone (Vapor Rub Dub).mp3
#EXTINF:446,If You Really Love Someone (The MURK Groove) - Liberty City
/Volumes/DJContent/DJ Trax/House - Deep Heavy/If You Really Love Someone (The MURK Groove).mp3
#EXTINF:387,Sunshine (Extended Mix) - Low Steppa
/Volumes/DJContent/DJ Trax/House - Deep Soulful/Sunshine (Extended Mix).mp3
#EXTINF:549,Transient (Original Mix) - Mr G
/Volumes/DJContent/DJ Trax/House - Deep/Transient (Original Mix).mp3
#EXTINF:700,Essence Of Life (Roy's Hard Doors Mix) - Roy Davis present The Believers
/Volumes/DJContent/DJ Trax/House - Deep Soulful/Essence Of Life (Roy's Hard Doors Mix).mp3
#EXTINF:327,Essence Of Life (Stompin' Darkside Mix) - Roy Davis present The Believers
/Volumes/DJContent/DJ Trax/House - Tech/Essence Of Life (Stompin' Darkside Mix).mp3
#EXTINF:402,Ooh I Love It (Love Break) (Late Nite Tuff Guy Muscle Edit) - The Salsoul Orchestra
/Volumes/DJContent/DJ Trax/Disco/Ooh I Love It (Love Break) (Late Nite Tuff Guy Muscle Edit).mp3
#EXTINF:95,Come Back Home (Accapella) - Secret Sounds
/Volumes/DJContent/DJ Trax/Accapella/Come Back Home (Accapella).mp3
#EXTINF:381,Heaven (Danny Krivit Edit) - The Vision feat Andreya Triana
/Volumes/DJContent/DJ Trax/House - Soulful/Heaven (Danny Krivit Edit).mp3