I can't see any options to allow looping but thought it worth a mention.
yeah found this also. Have a look here: http://www.modaco.co...m/#entry2066396
I think you'll find that only some of them don't loop. Someone offer to convert one of them for me, but I didn't want to put him out. So, I decided on the Agro Navis tone. It does loop. Hope this helps
I think I tried this too, but no joy.