TAudioConverter is an audio converter that uses many powerful backends to convert audio and video files to different audio formats. It can run multiple encoder instances (up to 16) in order to shorten encoding time. Both portable and installer versions for 32/64bit Windows systems are available.
If you want to get stable version please visit [http://www.fosshub.com/TAudioConverter.html).
For beta versions please visit bitbucket page.
TAudioConverter (or TAC) is written in Delphi. AlphaControls, JVCL-JCL and NewAc components are used during development. Sources of some projects which are utilized by TAC are also included. These projects use tagging components by 3delite.hu.
You can contact me from ozok26[at]gmail[dot]com. You can also get help from doom9 and hydrogenaudio.