Assistance with types of downloads

Can somebody explain;-

Queue source, global queue, session queue etc.
I just want to download a file from an ftp server, if it stops I want it to automatically continue. How do I do this please?

using the gobel queue is the best choice, just don't bother with the others. the upcoming smartftp 2.0 will only feature this mode. however, the most recent smartftp developer build (get it from my footer) allows to use the globel queue by default when you drag & drop. go to settings -> general -> navigation, make sure the first box is set to "queue - global - default" and the second one to "queue", and all your downloads will use the global queue and will be resumed on failure until finished.