Bug#895125: Soundconverter mp3 issue

[Rob Oosterling]

Package: soundconverter
Version: 3.0.0~beta1-2

Dear maintainer,

I installed this version, including all dependencies and recommended 
options (including gstreams-ugly),

apt-cache depends soundconverter
soundconverter
   Depends: <python3:any>
     python3
   Depends: python3-gi
   Depends: gir1.2-gconf-2.0
   Depends: gir1.2-glib-2.0
   Depends: gir1.2-gstreamer-1.0
   Depends: gir1.2-gtk-3.0
   Depends: gstreamer1.0-plugins-good
   Depends: gstreamer1.0-plugins-base
   Recommends: gir1.2-notify-0.7
   Recommends: gstreamer1.0-libav
   Recommends: gstreamer1.0-plugins-ugly

but the lame (mp3) option appears not to be seen by Soundconverter:

SoundConverter 3.0.0-beta1
   using GTK version: 3.0
   using Gstreamer version: 1.14.0.0
   using 4 thread(s)
   using gio
   "lamemp3enc" gstreamer element not found, disabling MP3 output.

Running Debian Testing updated until today:

-- System Information:
Debian Release: buster/sid
   APT prefers testing
   APT policy: (600, 'testing'), (400, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.15.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), 
LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages soundconverter depends on:
ii  gir1.2-gconf-2.0           3.2.6-4.1
ii  gir1.2-glib-2.0            1.56.0-2
ii  gir1.2-gstreamer-1.0       1.14.0-1
ii  gir1.2-gtk-3.0             3.22.29-2
ii  gstreamer1.0-plugins-base  1.14.0-2
ii  gstreamer1.0-plugins-good  1.12.4-1+b1
ii  python3                    3.6.4-1
ii  python3-gi                 3.28.1-1

Versions of packages soundconverter recommends:
ii  gir1.2-notify-0.7          0.7.7-3
ii  gstreamer1.0-libav         1.14.0-1
ii  gstreamer1.0-plugins-ugly  1.14.0-1

soundconverter suggests no packages.

-- no debconf information

Thanks!