I've noticed a special ringtone that is used when your SD card is mounted to your PC. I like it, and would like to use it for my default ringtone, but it doesn't seem to be an option, nor can I find it anywhere in the file system. Also, when I asked the folks at HTC where the file was located, they conveniently dodged my question and and told me how to add new ringtones to my SD card. (not surprised). Any knowledge here would be appreciated. Thanks!