Ring Tones

They're likely within the /system partition, but you'll need root to access them if so.
assuming you are referring to the builtin ringtones, they are in the internal memory. on my bionic i can see them with astro file manager, they are under /system/media/audio/ringtones. if you are referring to ringtones that you downloaded they are most likely on the builtin sd card but possibly on sdext.