That line has a 5 year warranty. call s/a and they will surely replace it as long as they don't see any abuse to it like abrasions and cuts in the line from pulling it across pilings, oyster bars, etc.
Did it break at the weld where the sinking line is joined to the running line (at the color difference?)
I have had many airflo lines break there because they have a problem with their welds but I've never had an s/a line break.
Call the dealer you purchased it from to see if they will replace it first and if not call s/a. Make sure you have your receipt.