But you must admit that a Windows-only format might be viewed by some as a slightly unfortunate choice in the first place. For a company in your business, I mean. ;-)

Luckily you were able to convert your files. What would you have done if the player vendor, say, had dropped support for the next version of Windows? Would the files have been lost to you? In my opinion, the fact that somehow you wanted to convert the files, but your software offered no obvious way of doing this, shows that free formats are always the better choice.

BTW, how did you do it? Are you planning to post the instructions?

I’d be curious which of your requirements weren’t satisfied by the FOSS alternatives you were aware of. We can always use feature suggestions. :-)