SMPlayer not display ".thd" as supported file type and can't load external TrueHD audio track

Binary package hint: smplayer

mplayer have TrueHD audio support. SMPlayer playback video file with TrueHD audio tracks without problems if this audio track is a part of the media containver (mkv or m2ts). But SMPlayer not display thd-files in "Audio > Load external file..." dialog, and can not load it, even I change file extension to supported (ac3 for example).

I must provide sample and reproduce steps or it's knows problem?

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: smplayer 0.6.9-1
ProcVersionSignature: Ubuntu 2.6.35-11.16-generic 2.6.35-rc5
Uname: Linux 2.6.35-11-generic x86_64
Architecture: amd64
Date: Sat Jul 31 04:01:20 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
ProcEnviron:
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: smplayer