#!/bin/bash
M3U_FILE="/home/bober/Desktop/asdf.m3u"
GOT_EXTINF=0
GOT_PATH=0
IFS=$'\n'
(
  echo -e "ARTIST\tALBUM\tTITLE"
  while read LINE; do
    IS_EXTINF=$(echo "$LINE" | grep '^EXTINF:')
    if [ "$GOT_EXTINF" -eq 0 ] && [ "$GOT_PATH" -eq 0 ] && [ -n "$IS_EXTINF" ]; then
      GOT_EXTINF=1
      GOT_PATH=0
      ARTIST_TITLE=$(echo "$LINE" | sed 's|^EXTINF:[0-9]\+,||')
      ARTIST=$(echo "$ARTIST_TITLE" | sed 's|^\(.*\) - .*|\1|')
      TITLE=$(echo "$ARTIST_TITLE" | sed 's|^.* - \(.*\)|\1|')
    fi
    if [ "$GOT_EXTINF" -eq 1 ] && [ "$GOT_PATH" -eq 0 ] && [ -z "$IS_EXTINF" ]; then
      ALBUM="$(basename "$(dirname "$LINE")")"
      echo -e "${ARTIST}\t${ALBUM}\t${TITLE}"
      GOT_EXTINF=0
      GOT_PATH=0
    fi
  done < "$M3U_FILE"
) | column -t -s $'\t'z
EXAMPLE m3u file
../../../media/bober/External/UPLOAD/Napior Dump/Eric's External Music/Dave Pearce Trance Anthems 2009/Dave Pearce Trance Anthems 2009 CD3/(02) [Art Of Trance] Madagascar (Richard Durand Mix).mp3
#EXTINF:319,Art Of Trance - Madagascar (Ferry Corsten Remix)
../../../media/bober/External/UPLOAD/Napior Dump/Eric's External Music/Trance/Various - World's Greatest Euphoric Trance/309 - Art Of Trance - Madagascar (Ferry Corsten Remix).mp3
#EXTINF:208,artist - wsin y yandel y tempo
../../../media/bober/External/UPLOAD/Napior Dump/Eric's External Music/03 (Reggeton) Wisin y Yandel feat Tempo .mp3
#EXTINF:256,Team Deep - Morning Light
../../../media/bober/External/UPLOAD/Top 100 Trance and Techno Party Songs of All Time/Team deep - Morning light.mp3
#EXTINF:247,Ascension - For a Lifetime
../../../media/bober/External/UPLOAD/Napior Dump/Eric's External Music/Trance/Various Artists - Anthems of Ibiza/57 - Ascension - For a Lifetime.mp3
#EXTINF:354,Ascension - Someone (Thrillseekers Remix)
../../../media/bober/External/UPLOAD/Napior Dump/Eric's External Music/Trance/Various - World's Greatest Euphoric Trance/305 - Ascension - Someone (Thrillseekers Remix).mp3
#EXTINF:315,Asha Bendalim - Hope
../../../media/bober/External/UPLOAD/Napior Dump/Eric's External Music/GLOBAL BEATS presents ARABICA (3CD) (2006)/cd3/306-asha_bendalim_-_hope.mp3
#EXTINF:243,Asian Kung-Fu Generation - Haruka Kanata
../../../media/bober/External/UPLOAD/Naruto_-_Haruka_Kanata.mp3
#EXTINF:90,Asian Kung-Fu Generation - After Dark (TV Size)
../../../media/bober/External/UPLOAD/Bleach_-_After_Dark_TV_Size.mp3
#EXTINF:185,Asian Monkeys - Kiss Me
../../../media/bober/External/UPLOAD/Napior Dump/Eric's External Music/Trance/Asian Monkeys - Kiss Me.mp3
#EXTINF:475,Astral - Projection One
../../../media/bober/External/UPLOAD/Napior Dump/Eric's External Music/VA-Psy Trance Euphoria 2 Mixed By John Fleming/Psy Trance Euphoria 2 - CD 1/(10) [Astral] Projection One.mp3
#EXTINF:358,Astrix - Sex Style (XSI Remix)
../../../media/bober/External/UPLOAD/Napior Dump/Eric's External Music/VA-Psy Trance Euphoria 2 Mixed By John Fleming/Psy Trance Euphoria 2 - CD 3/(12) [Astrix] Sex Style (XSI Remix).mp3
#EXTINF:161,ATB - 9 P.M. (Till I Come)