We wish you a happy new year!
Tunebite changed quite a lot in the last years, so there is a major difference between version 4 and 6.
Tunebite 6 is a universal converter for once, not only a DRM converter
It now supports over 100 audio and video formats
You can now also download music and videos with it
The speed Tunebite now works with is 54x
A Perfect Audio function makes it possible to guarantee perfect audio during the re-recording process.
You will have to pay for the new version but not the full price, you will get a considerable discount. You’ll only have to write to the support team (firstname.lastname@example.org) so they can track you down in the system.
Tunebite 6 works with over 100 formats, you should have no problems in converting yours. You can also check here to see some of the available formats: http://tunebite.com/en/audio_video_drm_copy_protection/formats/index.html