This is more of a practical solution than a "legal" solution. Landlords are sometimes willing to forgive the early termination fee if you find your own replacement. It saves them the cost of advertising and having a vacant apartment. See if you can contact your landlord (or someone that works for that person), and ask if they will waive if you find your own replacement. In this economy, most landlords would rather have an occupied apartment than chase a former tenant around looking to collect termination fees.