I asked the support, as here no one knows or there:
I would like to buy the GoldenDict app for my SGS2 (CM 10.2.1 = OS 4.3)
but I don't know how to enable the audio output, which is disabled with
my few babylon dictionaries (bgl-files).
Does this work for BGLs?
How can I enable it?
This the support answered, now clear:
The pronunciation feature currently works with the dictionaries which specifically contain pronunciations. Those include most of the Lingvo original dictionaries plus several user-made ones.
Some Lingvo dictionaries have sounds in the supplementary .lsa files.
The upcoming versions of GD will feature TTS support, which would synthesize pronunciations for any dictionary installed.