Wow! that was fast, congratulations.

I'll test it as soon as possible and provide you feedback. However if this is going to be promoted to Testing at any time, you should provide an upgrade path for current users with a postinst script that checks and moves all the related stuff.

Edit: Upgrading from previous version throws error:

error setting ownership of './opt/fheroes2/files/music/README'

Because I had all data, maps and music symlinked to MyDocs, so I can override it easily.