p.p.s. The need to specify mime-types suggests that --contrary to suggestions in posts which I may have echoed without testing-- it may be difficult to impossible to run multiple versions of wine-and-or-Wine_portable. [This might help if there was a need to use both Wine and Wine-portable: MIME-types defined in /etc are, I believe, subordinate to those in /root/.config/rox.sourceforge.net/SendTo, the latter being assignable via Right-Click>Customize Menu].