Anonymous
I just solved my problem :As I used Antix for the first time, it said that my browser was out of date … I install the latest version ( nor ESR, the 60. … in my opinion )
and I did not notice that just after that the sound disappeared all at once …!
I re-install the old version and it’s ok now .
I can say the problem is solved but also that its not desirable to change the Firefox installed, at least for a new bee like me !
Thanks !