I know that this has been discussed before and that using a VM or Wine is the "school solution" for using MP3TAG on Linux platforms, two options that I have decided not to use. In any event, I'd like to state my reasons for asking for a Linux version of MP3TAG.
None of the GUI Linux offerings to tag MP3 files are as flexible and as elegant as MP3TAG is. If someone knows one that is I'd like to know about it.
I have no desire to use the Linux command line to tag MP3 files.
I am in the process of dumping Windows for Linux Mint. MP3TAG is a critical tool for me and will require me to maintain a Windows computer just to tag MP3 files. I've used MS Windows since Windows 3.0 and enough is enough!
Florian, I realize that you are a one man shop and that you have a family! Perhaps a working group could be formed to help out where you think it would be most effective.
Given the smaller Linux market, I would support a paid license model to ensure a revenue stream to justify your efforts.