olivares at raspberrypi:~/Downloads $ uname -a Linux raspberrypi 6.1.0-rpi6-rpi-v8 #1 SMP PREEMPT Debian 1:6.1.58-1+rpt2 (2023-10-27) aarch64 GNU/Linux Which devel package is needed to build mplayer so I can have sound? Thanks in advance, Best Regards, Antonio