Interestingly, the 3.7.2-1 amd64 package from stretch is not affected by the problem. Maybe it was an interaction bug with some other component?
-- System Information: Debian Release: stretch/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 4.8.0-2-amd64 (SMP w/2 CPU cores) Locale: LANG=it_IT.utf8, LC_CTYPE=it_IT.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages audacious depends on: ii audacious-plugins 3.7.2-2+b1 ii dbus 1.10.14-1 ii dbus-x11 1.10.14-1 ii gtk2-engines-pixbuf 2.24.31-1 ii libaudcore3 3.7.2-1 ii libc6 2.24-8 ii libgcc1 1:6.2.1-5 ii libglib2.0-0 2.50.2-2 ii libstdc++6 6.2.1-5 Versions of packages audacious recommends: ii unzip 6.0-21 audacious suggests no packages.