Your user profile says it is the free version. That's why I mentioned it.

I'd then suggest loading the text file to a temporary file. Then you can create text object with txt_create and load the file with the list with txt_load or txt_loadw. Finally you can iterate over the text's string and download each individual file.

http://www.conitec.net/beta/atxt_load.htm

The iteration pretty much works like this:
Code:
int i;
for (i = 0; i < t->strings; i++)
{
   STRING* url =(t->pstring)[i];
   // Now download from url...
}

Always learn from history, to be sure you make the same mistakes again...