
Here is another solution to download fast in Firefox just like download manager. FireDownload is a small Firefox add on to download without using download manager. It lets the users to download with accelerating technology working at the background.
Unfortunately sometimes it will block the download from some websites so that whenever it does just disable this add on. In order to use this add on you must have Firefox 3.0 or greater version.
Click to DOWNLOAD this Add-On
.