The copy in lmms is not available for other programs to use.
After I filed https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=758888
it was made available in /usr/lib/ladspa:
https://salsa.debian.org/debian-edu-pkg-team/lmms/commit/754c10e#
58ef006ab62b83b4bec5d81fe5b32c3b4c2d1cc2
But then it was hidden again because the one in swh-plugins became
available:
https://salsa.debian.org/debian-edu-pkg-team/lmms/commit/
a58ea7c7c719df57ce51ba163faf6603b87d81cb
SINK="autoaudiosink"
+# Using vocoder_1337.so, in Debian it's available in the swh-plugins package.
gst-launch-1.0 -v interleave name=i ! \
capssetter caps="audio/x-raw,channels=2,channel-mask=(bitmask)0x3" ! audioconvert ! audioresample ! \
- ladspa-vocoder-1337-so-vocoder-lmms \
+ ladspa-vocoder-1337-so-vocoder \
number-of-bands=16 \
left-right=0 \
band-1-level=1 \