Audiobook.sh
find . -name '*.mp3' -print0 | xargs -0 -I {} sh -c 'echo "{}"; n="{}~"; cp "{}" "$n"; id3v2 -D "$n"; cat "$n" >> comb.mp3; rm "$n"'; ffmpeg -i comb.mp3 -acodec libfaac audiobook.m4a; mv audiobook.m4a audiobook.m4b
find . -name '*.mp3' -print0 | xargs -0 -I {} sh -c 'echo "{}"; n="{}~"; cp "{}" "$n"; id3v2 -D "$n"; cat "$n" >> comb.mp3; rm "$n"'; ffmpeg -i comb.mp3 -acodec libfaac audiobook.m4a; mv audiobook.m4a audiobook.m4b