to use the deep jack hole with casual earphones , i'm using this adapter
it enters full in the jack connector

http://www.ebay.com/itm/Universal-3-5mm-Male-to-Female-Audio-Extension-Cable-Short-10cm-4-Poles-EG/252779035093?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

cable and connector are thin , i bought 2 to be sure not damaging one .

yoyo