Thanks, everybody. The thing is... a GUI is still needed, and the easiest I know of is... C++ Turbo Explorer, wich is a free version of a Delphi-like GUI, with C code to drive it. The other stuff at the links seems pretty rudimentary due to the programmers being Linux-only folks, with CLI, and pretty old (unless TransCode has evolved). I don't know what to say, and I certainly don't have the time to deal with starting from scratch now
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