Talk with SZ Rikki....I had the same problem with my KORG using a Christmas jingle bell loop years ago, same problem of non repeating...somehow she was able to figure out what I was doing wrong and made it work perfectly to repeat & loop..good luck..

also try this using your wav as a pad...

"While in PAD EDIT or RECORD mode press MENU and select PAD TRACK CONTROLS -
Then set PAD TYPE to LOOP. Then WRITE the pad.