I went to the self directed web page to purchase the key for CD-DA Extractor. The page was renamed EZ CD Audio Converter, no mention of DVDs. Will the Audio Converter key work with my CD-DA software? What do I need to do?
The Easy CD-DA Extractor Ultimate doesn't appear to be available and I am pretty sure that you can't use a license key from one product to another. I've checked and it appears that Poikosoft are the developers of both applications which means you can get in touch with them to ask about the availability of the previous version of the software as well as what is the key valid for, the one that you have.
You can send an inquiry for this using the contact form available on the Contact Us page.
