^There you have it.
Other manufacturer options-
Roland R-05 and R-09HR can divide, combine, rename, trim (divide and keep only the wanted portion), move and copy the files natively. I think they can also convert WAV to MP3 natively.
Sony M10 can split files, not sure if it can join or rename them as well, but I think it can at least rearrange playback order.
Some Olympus recorders such as the LS-14 and LS-P2 can divide, trim, and erase sections of files.
And there are probably others as well. Check their user manuals for details to confirm they'll do what you want. I suspect the Roland R-05 may have more extensive file manipulation functions than most, so you might take a look at that one first if the DR-05 doesn't do what you need.