誰もがWindows使っているわけでもないんだよなというわけで

Mac版
Safari,Firefox https://fpdownload.adobe.com/get/flashplayer/pdc/30.0.0.134/install_flash_player_osx.dmg
Chrome,Chromium https://fpdownload.adobe.com/get/flashplayer/pdc/30.0.0.134/install_flash_player_osx_ppapi.dmg

Linux版は種類が多いので64bit tar.gzだけ
Firefox https://fpdownload.adobe.com/pub/flashplayer/pdc/30.0.0.134/flash_player_ppapi_linux.x86_64.tar.gz
Chrome,Chromium https://fpdownload.adobe.com/get/flashplayer/pdc/30.0.0.134/flash_player_npapi_linux.x86_64.tar.gz

今現在の最新版なので今後使えなくなる可能性あり