Some m3u8 declare audio tracks like this :
#EXTM3U
#EXT-X-VERSION:5
# AUDIO groups
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio-aacl-144",NAME="Spanish/Castilian",LANGUAGE="spa",AUTOSELECT=YES,DEFAULT=YES,CHANNELS="2",URI="XXXXX-audio_AACL_spa_144800_51=144800.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio-aacl-144",NAME="English",LANGUAGE="eng",AUTOSELECT=YES,CHANNELS="2",URI="XXXXX-audio_AACL_eng_144800_52=144800.m3u8"
# variants
#EXT-X-STREAM-INF:BANDWIDTH=779000,AVERAGE-BANDWIDTH=709000,CODECS="mp4a.40.2,avc1.4D4015",RESOLUTION=426x240,FRAME-RATE=29.97,AUDIO="audio-aacl-144",CLOSED-CAPTIONS=NONE
XXXXX-video=530000.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1374000,AVERAGE-BANDWIDTH=1249000,CODECS="mp4a.40.2,avc1.4D401E",RESOLUTION=640x360,FRAME-RATE=29.97,AUDIO="audio-aacl-144",CLOSED-CAPTIONS=NONE
XXXXX-video=1040000.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1887000,AVERAGE-BANDWIDTH=1716000,CODECS="mp4a.40.2,avc1.4D401F",RESOLUTION=854x480,FRAME-RATE=29.97,AUDIO="audio-aacl-144",CLOSED-CAPTIONS=NONE
XXXXX-video=1480000.m3u8
On these cases, the player reproduces the video with no sound as it doesn't multiplex both streams (video and audio) into one.
It is possible to implement this in the player?