Yes, the new behaviour is much better and is quite usable already now. Many thanks for your continuing improvement of Marble Latest ogg-support from extras-testing broke voice guidance here too. To get it back I did: 1. downgraded ogg-support to 1.0.5 2. reinstalled decoders-support 3. disabled extras-testing repository 4. apt-get autoremove 5. reinstalled decoders-support - bingo
apt-get install ogg-support=1.0.5 restart