Hi there,
I have run into an issue playing some media with multi audio tracks on Libreelec v7.90.010 ALPHA (Kodi 17 Beta 7).
My configuration is as follows,
Intel NUC (Running Libreelec) <–HDMI–> Yamaha 5.1 Receiver (RX-V373) <–HDMI–> Samsung TV
I have enabled the following under settings,
- Audio device – ALSA HDA Intel PCH
- Number of Channels – 5.1
- Maintain original volume on downmix
- Stereo upmix
- Audio Passthrough
- Dolby Digital AC3 receiver
- Dolby Digital Plus (E-AC3) receiver
- DTS capable receiver
- TrueHD
- DTS-HD
I wasn’t sure if these were correct but it seems to work well for media with single audio channel.
I have come across some media with dual tracks as the example given below. When playing the video the voices (on one of the tracks) is either not playing or extremely quiet. The default track seems to work fine. How do I fix this 
The kodi log file and a typical example of a media that doesnt work is given below. I do not think this is related to Libreelec hence why im posting it on this forum.
Full log: http://sprunge.us/TfIT
General
ID : 1 (0x1)
Complete name : The Victoria's Secret Fashion Show 2016 1080i - S01E21.ts
Format : MPEG-TS
File size : 4.10 GiB
Duration : 42 min 50 s
Overall bit rate mode : Variable
Overall bit rate : 13.7 Mb/s
Movie name : 16VIC12OC20
Video
ID : 49 (0x31)
Menu ID : 1 (0x1)
Format : MPEG Video
Format version : Version 2
Format profile : Main@High
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : Variable
Format settings, picture structure : Frame
Codec ID : 2
Duration : 42 min 49 s
Bit rate mode : Variable
Bit rate : 12.5 Mb/s
Maximum bit rate : 80.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 (30000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.202
Time code of first frame : 00:00:00;00
Time code source : Group of pictures header
GOP, Open/Closed : Open
GOP, Open/Closed of first frame : Closed
Stream size : 3.75 GiB (92%)
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio #1
ID : 52 (0x34)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 129
Duration : 42 min 49 s
Bit rate mode : Constant
Bit rate : 384 kb/s
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 spf)
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : 14 ms
Stream size : 118 MiB (3%)
Language : English
Audio #2
ID : 53 (0x35)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 129
Duration : 42 min 49 s
Bit rate mode : Constant
Bit rate : 96.0 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 spf)
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : 7 ms
Stream size : 29.4 MiB (1%)
Language : tts