PakkISO is *even better* than ECM tools because it automates everything. Download and install, and then simply right click on the game folder and select "Unpack ISO" or drag and drop the game's folder onto unpakkIso.exe. The program will automate all the steps for you. It will unECM the files and decompress the APE files too, to give you a .BIN which you can then mount and play!
*** ive also included ecm tools aswell. just in case