The trustee seeking to recover money to distribute to victims of Bernard Madoff's Ponzi scheme plans to go after more funds associated with the owners of the Mets in an amended lawsuit, according to a source. Irving Picard, the trustee, already is seeking $1 billion from Mets principal owner Fred Wilpon and his family to redistribute to Madoff victims. The original suit was filed Dec. 7 and was unsealed last month.