hi guys.. i've had the 6700 for a few weeks now and its bee the greatest thing (except for the battery life when i 'use' it ) anyway i've recently been getting extreemly crappy audio coming out of the headphone jack. When i take the headphones out, it sounds fine, but when i listen with them... the best description is that it seems to be dropping frequencies? as in you hear mostly instrumental and almost no vocals, or you'll only hear the guitars etc..
it USED to work.. could it be my headphones? (the original ones that came with) .. i bought the dongle from radio shack (i know its crappy) to try other earphones and it still sounded like that. a friend of mine timlined it to probably being close to when i upgraded the firmware.. i cant confirm that but its not impossible..

anybody ever had this problem or have a suggestion ?