The firehose_get download tool is a command-lined wrapper around the wget utility. If you do not have wget installed on your machine (you will know, because firehose_get will fail),here are some links that should help. Of course, Googling "pre-built wget binary" for your system (Mac / Windows) should get you essentially the same result.
WARNING: I make these available as a convenience, but have not verified the integrity of these tools, nor are they likely to function on every machine. It is preferable for you to either Google your own version or download the source and build from scratch.
Macintosh
https://techtach.s3.amazonaws.com/files/wget
http://www.statusq.org/images/wget.zip
Windows
http://users.ugent.be/~bpuype/wget/
CURL
In approximately 1 week firehose_get will also support curl, which performs a very similar function as wget, and may already be installed on your machines.