Ringtone Storage on Device instead of SD Card?

[fowen]

I searched and I have found tons of guides on how to add a ringtone to the storage card but I can't find any on how to add it to the device itself. I tried adding it to the SD card but something happened on the device and the next day all I got was a clicking sound when my phone was ringing. I checked the ring setting and my custom ringtone was gone and nothing was checked. When I rebooted the device the custom ringtone appeared back in the list but I don't want to do this every few days to keep a custom ringtone.

Any ideas?