Kdenlive usb download

I'm a newbie to all things Linux etc. I have been trying to download Kdenlive for usb to run the demo on a windows machine. I let the download run overnight as it said it would take upwards of 9 hours to download the 1.4GB. This morning it has only downloaded 250,000KB. Is this the entire file but compressed or did the download drop out? Is there a faster way to download the files? For some reason my download speed is reduced to only about 25-40kbps. I have a highspeed cable broadband connection, but it seems to be downloading at dial-up speed. Can anyone help please?