This forum is for Audacity on Windows.If all else fails, try reading the instructionsthe-inventor wrote: Do I need to create a folder with all of the files I want to concatenate, and the program then grabs them all? If that is the case [haven't tried that yet], it then seems there would be no opportunity to specify the order they are to be concatenated.
The plug-in includes three short help screens that should answer most of your questions. If anything in the instructions is unclear, please ask.
By the way, (this is of no use for your immediate needs, but you may be interested) I agree that a built-in method to align tracks end-to-end would be extremely useful. I'm just starting to learn how to program in C++ and I've just written a modification that adds this functionality. It is not yet publicly available because the code needs to be "compiled" into Audacity, so currently it is only available for users that are able to build Audacity from the source code. I'll start a new forum topic about this modification, and if enough people think that it is worthwhile then perhaps it will be included in the next release version.