To change Front Row settings for Photos, you just have to change your settings in iPhoto for slideshows. Just so you know, Front Row opens iLife applications to play your files (if you are playing music, it opens iTunes, etc.). To change slideshow settings in iPhoto, open iPhoto and click the "play" button at the bottom. A settings window will open. Change the default settings to suit your needs (music, show titles, etc.) and click save settings (not play or cancel). Your settings will now be changed for iPhoto slideshows and for Front Row.