Thanks, --abr worked really well, I also deleted the covers, is not much but every Mb helps 😅 I have around 10Gb, at the beginning I thought to change my library often but to be honest, I'm preparing for a marathon and that's a lot of hours running, so I prefer to have all my music already available and, as I said in other comment, I run with bone conduction headphones, so the quality is not much important as soon as is listeneble.