Error in audio.log

I am testing this out right now and don't know why my speaker isn't working.  I am using the audio jack on the pi for connection with a USB microphone.  The speaker is old and junky but it does work.
    019-11-29 13:35:43.718 | INFO     |   760 | mycroft.messagebus.load_config:load_message_bus_config:33 | Loading message bus configs
  Carnegie Mellon University, Copyright (c) 1999-2011, all rights reserved
  mimic developers, Copyright (c) 2016, all rights reserved
  version: mimic-1.2.0.2 ()
2019-11-29 13:35:52.840 | INFO     |   760 | __main__:main:38 | Starting Audio Services
2019-11-29 13:35:52.856 | INFO     |   760 | mycroft.messagebus.client.client:on_open:67 | Connected
2019-11-29 13:35:52.898 | INFO     |   760 | mycroft.audio.audioservice:get_services:56 | Loading services from /home/pi/mycroft-core/mycroft/audio/services/
2019-11-29 13:35:52.919 | INFO     |   760 | mycroft.audio.audioservice:load_services:100 | Loading chromecast
2019-11-29 13:36:02.906 | INFO     |   760 | mycroft.audio.audioservice:load_services:100 | Loading mopidy
2019-11-29 13:36:02.920 | INFO     |   760 | mycroft.audio.audioservice:load_services:100 | Loading mplayer
2019-11-29 13:36:03.111 | ERROR    |   760 | mplayer__init__:<module>:20 | install py_mplayer with pip install git+https://github.com/JarbasAl/py_mplayer
2019-11-29 13:36:03.116 | ERROR    |   760 | mycroft.audio.audioservice:load_services:106 | Failed to import module mplayer
ImportError("No module named 'py_mplayer'",)
2019-11-29 13:36:03.119 | INFO     |   760 | mycroft.audio.audioservice:load_services:100 | Loading simple
2019-11-29 13:36:03.152 | INFO     |   760 | mycroft.audio.audioservice:load_services:100 | Loading vlc
2019-11-29 13:36:03.419 | ERROR    |   760 | mycroft.audio.audioservice:load_services:121 | Failed to load service. NameError("no function 'libvlc_new'",)
2019-11-29 13:36:03.423 | INFO     |   760 | mycroft.audio.audioservice:load_services_callback:168 | Finding default backend...
2019-11-29 13:36:03.427 | INFO     |   760 | mycroft.audio.audioservice:load_services_callback:172 | Found local

I solved this. I did an update and reboot.

hi good afternoon, how di you update your mycroft?
I am experimenting problems with audio… no sounds, it was working… but suddenly it is mute… I tried also mycroft-mic-test and no sound

I can try same you did, thanks