MKV AudioConverter is a free program thta made to be Matroska MKV DTS to MKV AC3 converter and not only that because this freeware also can remove DTS tracks and convert OGG audio to AC3,MP3,AAC,MP3.
It requires a lots of external tools but AudioConverter will prompt the user to download them.
download BonkEnc now, this is free program for CD ripper, audio encoder and converter for various formats. It can produce MP3, MP4/M4A, Ogg Vorbis, AAC, Bonk and FLAC files.
BonkEnc makes it easy to convert your audio CDs to MP3 or Ogg Vorbis files which you can use in your hardware player or with your favorite audio software. The program supports the CDDB/freedb online CD database and CDText and automatically writes song information to ID3v2 or Vorbis comment tags.
FormatFactory is all in one media converter
* All to MP4/3GP/MPG/AVI/WMV/FLV/SWF.
* All to MP3//WMA/MMF/AMR/OGG/M4A/WAV.
* All to JPG/BMP/PNG/TIF/ICO/….
* Rip DVD to video file.
* MP4 files support iPod/iPhone/PSP/BlackBerry format.
* Source files support RMVB.
* support converting all popular video,audio,picture formats to others.
* Repair damaged video and audio file.
* Reducing Multimedia file size.
* Support iphone,ipod multimedia file formats.
* Picture converting supports Zoom,Rotate/Flip,tags.
* DVD Ripper.