magnet:?xt=urn:btih:d3c6916f9f7962cd5e2d63a604c9db1956d639f9&xt=urn:md5:b7eb00b063ca6d4475a5358f34b9131d&xl=56129667&dn=qt-mac-opensource-4.2.1.dmg&as=https://download.qt.io/archive/qt/4.2/qt-mac-opensource-4.2.1.dmg&tr=http://bt.qt-project.org:6969/announce