- convert the signature image to PDF file
convert firma.png firma.pdf
$ brew install -v mp3wrap ffmpeg id3lib | |
$ mp3wrap tmp.mp3 1.mp3 2.mp3 3.mp3 .... | |
$ ffmpeg -i tmp_MP3WRAP.mp3 -acodec copy all.mp3 && rm tmp_MP3WRAP.mp3 | |
$ id3cp 1.mp3 all.mp3 |
This gist assumes: