running a simple command line tool

[CJ Tres]

I have downloaded an mp3 player sync tool called natool, for the Neuros 
II DAP. It is a simple command line tool and non-interactive.

It successfully decompressed and installed (using a perl script) after 
the dev included a perl module that was needed.

The man page shows how to copy music to the player:
(back slashes were used by the developer to indicate different parts of 
the command)

natool --neuros-path /mnt/neuros \
                 dirsync ~/music/ my_music \
                 dbsync

However when I run the above command the return tells me that no command 
'natool' was found and suggests that I may have meant 'atool'

after unpacking and installing I cd'd to the resultant directory to run 
the command.
Clearly I'm doing something wrong but I've not been able to discover 
what that is.