I think it's Sven who usually recomends these guys: http://stores.ebay.com/esoTechTrix_...sQ3amesstQQtZkm
They sell on ebay and have the right convertor for your phone. You might not be looking to convert it from 2.5 to 3.5, but you could grab this and then use any earphones you want and it should be ok. If I understand these right.
"I have no special talents, I am only passionately curious" - Albert Einstein