Yes, im using the new beta, but it also worked on the previos stable version (I have had my DVB-T for some time now).
Im using HDMI and have also tried composite.
Im not using any receiver between the Dune and the TV and the FW is standard-setup.
Im receiving DR HD, DR K, DR Ramasjang, DR Synstolking, DR Update, DR1, DR2, Folketinget, Hovedstaden, OAD Mux1, OAD Mux2 and TV 2.....all with sound.
I have a Dune Max and a Dune Prime 3.0 and I just realised that I can record channels (by pressing "Play") on my Prime but not on my Max !!!!....I have to look into this
Please let me know if there is anything I can do to help you
PS. You can try to record from a channel wothout sound and play the sample on a PC to see if the sound is recorded.