For sale with no reposnse, what can I do now with Bank of America

My home has been on the market for 9 months with no traffic - the market is really depressed right now, and values have declined considerably. We paid $420 for the home with a $320K first mortgage and an $80K second. I don't know for sure what the home would bring, but I would guess it would be well under $400K. My ex-husband moved out 3 years ago and signed a quit-claim deed, but he is still on the mortgage. Of course I lost his income (he now has to pay rent elsewhere) and I have subsequently had a 50% reduction in income (I am in a real-estate related field). I moved out in January, but have kept the mortgage current as I am trying to hold out until the home can sell. I have spent thousands of dollars in re-painting, repairing and cleaning this home in an effort to make it appealing to buyers, but to no avail. I am just about out of money and am considering bankruptcy. I really really need to try to protect my ex-husband's credit (this is not his fault), but I have to get some relief and need to be able to pay rent on a smaller scale. How can I (and my ex-husband) get out of this mess?