I need to reinstall the software but I've lost my registration code. What should I do?

I am a registered user. How do I upgrade to the new versions?

I've bought a license but I haven't received any order confirmation email. How can I use the license?

I've just bought a new machine. Can I transfer my license to use on the new system?

After downloaded the license file I can't seem to open it.

I got the error: "DVD Audio Extractor is damaged and can't be opened. You should move it to the Trash." What can I do?

There are so many output formats to choose from. Which one is better?

How can I create an Audio CD from my live concert DVD?

What does the error message "Can not read the selected audio stream. Please try other formats!" mean?

The extracted MP3 files play at wrong speed and/or shows wrong length. What's wrong?

Can I extract audios from DVD menu instead of DVD titles?

Why some audio streams on DVD-Audio disc are missing / not listed? How to extract from those streams?

I can't seem to play the Apple Lossless files created with DVD Audio Extractor. What's the problem?

Does DVD Audio Extractor support Blu-ray discs?

Some DVD-Audio discs extract to very small result files that contain only about 1 second of noise. What could be wrong?