3 available audio formats: PCM, DTS-HD and DolbyHD. From this side there, no complaints. With a great amp and adequate HI-FI speakers, even happiness. ON savor the clarity of songs with folk guitar as "as tears go by". By cons, with the available space offered by Blu-ray, I regret the absence of words and displaying song titles. Some pictures would also welcome to plunge us back into the atmosphere. Instead, it was just right to a picture and the 50 "tracks" without any other musical information ... A bit light for 3 hours of non stop zik. That said, worth the purchase for the reasonable price of 10-12 euros.