MPDStatus: Add elapsed (for high resolution timing) and mixRampDB status.
MPDStatus: Add elapsed (for high resolution timing) and mixRampDB status.

abarisain/dmix,jcnoir/dmix,joansmith/dmix,jcnoir/dmix,0359xiaodong/dmix,joansmith/dmix,hurzl/dmix,abarisain/dmix,0359xiaodong/dmix,hurzl/dmix