AOL watched Frankel very closely after that, taking down other projects that he tried to release to the public, such as an MP3 search engine and a patch for AOL Instant Messenger to block advertisements in the application. Frankel threatened to resign on June 2, 2003, after AOL removed his program "WASTE", a private peer-to-peer file-sharing program, from the Nullsoft website. He stayed with AOL after that in order to complete Winamp version 5.0, a hybrid of the Winamp v2.x series and Winamp v3.