how do I extend 30 sec loop to 45 mins?

Hi, I have a bird call recording of 30 secs and I want to extend it as a loop to play for 45 mins - is it possible please?

Windows 7, 64 bit
Audacity 2.05

[u]This page[/u] should help.

Copy and paste did the trick!
many many thanks and a happy Christmas

Probably quicker to use the “Repeat” effect: