How to Reduce Blogger's feed size below FeedBurner's 512K limit

Few days ago i got trouble when try to make feed for my other blog that is software download blog, the content is about free software for windows that we ca use for absolutely free. The problems is feedburner detect that my feedburners limit of feed size larger than 512k. I`m searching google to solve the problem but i`ve found nothing. Than i go to the feedburners help, than it redirect me to