Say, for example, that there are several folders in a location (ex. C:\Animals\Aardvark, C:\Animals\Bear, C:\Animals\Cat, etc.), with files in them with the same extension (C:\Animals\Aardvark\aardvark.txt, C:\Animals\Bear\bear.txt, C:\Animals\cat\cat.txt). Is there any way to copy all the files matching, in this case, *.txt over all those folders to a set location without having to open each folder in C:\Animals one at a time and copying the .txt files?
I would use the search assistant and search for all .txt files in the c:\animals directory. When it gives you the files it found, select them all and hit copy, then you can paste them in another folder.
I've done that many times to get music out of \artist\album file systems that ripping them usually makes.