mplayer cannot play DVD video

[jd1008]

Says there is no sound, but I can play other media.

Here's the full output:

mplayer /dev/sr0
MPlayer 1.2-5.1.1 (C) 2000-2015 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote 
control.

Playing /dev/sr0.
libavformat version 56.25.101 (external)
MPEG-PS file format detected.
MPEG: No audio stream found -> no sound.
VIDEO:  MPEG2  720x480  (aspect 2)  29.970 fps  8000.0 kbps (1000.0 kbyte/s)
Load subtitles in /dev/
[VS] Software VDPAU backend library initialized
libva info: VA-API version 0.37.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib64/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_37
libva info: va_openDriver() returns 0
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 56.26.100 (external)
Selected video codec: [ffmpeg2] vfm: ffmpeg (FFmpeg MPEG-2)
==========================================================================
Audio: no sound
Starting playback...
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.
Movie-Aspect is undefined - no prescaling applied.
VO: [vdpau] 720x480 => 720x480 Planar YV12
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [vdpau] 720x480 => 854x480 Planar YV12
V:   0.3   2/  2 ??% ??% ??,?% 0 0
[VD_FFMPEG] DRI failure.
V:   3.4  96/ 96 11% 31%  0.0% 0 0
==========================================================================
Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III
mpg123 failed to reopen stream: Error reading the stream. (code 18)
mpg123 init error: Error reading the stream. (code 18)
ADecoder init failed :(
ADecoder init failed :(
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
Unknown/missing audio format -> no sound
ADecoder init failed :(
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
Unknown/missing audio format -> no sound
ADecoder init failed :(
Requested audio codec family [mad] (afm=libmad) not available.
Enable it at compilation.
Opening audio decoder: [hwmpa] MPEG audio pass-through (fake decoder)
Cannot sync MPA frame: 0
ADecoder init failed :(
ADecoder init failed :(
Opening audio decoder: [spdif] libavformat/spdifenc audio pass-through 
decoder.
AUDIO: 48000 Hz, 2 ch, mpeg2, 768.0 kbit/50.00% (ratio: 96000->192000)
Selected audio codec: [spdifmpa] afm: spdif (libavformat/spdifenc MPEG 
AUDIO BC pass-through decoder)
==========================================================================
AO: [pulse] 48000Hz 2ch s16le (2 bytes per sample)
[format] Sample format big-endian MPEG-2 not yet supported
[libaf] Reinitialization did not work, audio filter 'format' returned 
error code -2
[libaf] Unable to setup filter system can not meet sound-card demands, 
please send a bug report.
Couldn't find matching filter/ao format!
V:   3.4  96/ 96 10% 30%  0.0% 0 0


Exiting... (End of file)

So, what package am I missing?