You dont flash it. You just unzip them and place them on your sdcard. Create a folder that is called media, inside that folder, create another folder called audio, instead that folder create 2 folders. one called notifications and other called ringtones. put your ringtones into the ringtone folder and any notification ones in the notification folder.
Word of advice. Dont keep creating a new thread each time you have an issue if it pertains to the ROM. Post it on that thread. You will get quicker responses and keep the forum nice and clean.