LG BD670, trouble with DTS

Good morning,
I am having trouble with mkv's wich have DTS 5.1 sound (with AC3 5.1 works fine) streaming from Serviio to my LG DB670....
First I tought it was a network problem, and changed from Wifi to Ethernet connection (using a PLC adaptor from TPLINK) without exit. Network speed looks fine (tested with my laptod downloading files from the server using FTP).
Can anybody help me?
Note: server is a MacMini 3.1 running serviio 1.0.1
I am having trouble with mkv's wich have DTS 5.1 sound (with AC3 5.1 works fine) streaming from Serviio to my LG DB670....
First I tought it was a network problem, and changed from Wifi to Ethernet connection (using a PLC adaptor from TPLINK) without exit. Network speed looks fine (tested with my laptod downloading files from the server using FTP).
Can anybody help me?
Note: server is a MacMini 3.1 running serviio 1.0.1