No volume when starting media/music/video player

[hip_hop_rob]

Here's  my issue , on occasion when I open up for example mk video player , I find on playback that audio is missing, I then close the application and try music player instead and find audio playback is missing too.  This is on both internal (headphones) and external speakers too.  Normally a switch on and off will reset things and audio comes back. Othertimes I have to fiddle by opening and closing various media apps to get audio to come back to life again.  This is happening more and more and whilst originally a mild inconvenience, is now becoming irritating .  Has anyone else had this problems and more importantly has anyone  got a simple workaround.  Has a setting changed is what i a m thinking, like when I downloaded mk player from marketplace ?

[amillionbytes]

Hey Hip Hop Rob

OK so JUST FOR YOU I put MX Video Player onto my Tableux and uploaded an MKV of Alien Resurrection.

Here's the Media Info:

When it's on hardware rendering mode, the sound cuts out if I use the AC-3 track.  Switch to software and it's fine.  So, presumably, the Codec that comes with the MX Video Player just hates it.

Swap to track 2, the 2-channel track, and HW and SW work fine.

Try using MediaInfo on your file?  See what codecs are in it?