This will work for any notification sound but I did this for the droid sound on the tbolt.
Since I am still big on the DROID notification I took root explorer and copied the DROID notification sound and moved it to my sd card on my droid. I then took my usb cord and transferred it to my desktop (yeah it would have been faster to send it to my dropbox but oh well). I then copied it on to the sdcard on my tbolt. With root explorer I copied (copy because if you move it and you run a rom later then you would have to do this all over again) it to /system/media/audio/notification after copying it there I did a reboot. After rebooting device I now have DROID as a choice in the notification settings
Since I am still big on the DROID notification I took root explorer and copied the DROID notification sound and moved it to my sd card on my droid. I then took my usb cord and transferred it to my desktop (yeah it would have been faster to send it to my dropbox but oh well). I then copied it on to the sdcard on my tbolt. With root explorer I copied (copy because if you move it and you run a rom later then you would have to do this all over again) it to /system/media/audio/notification after copying it there I did a reboot. After rebooting device I now have DROID as a choice in the notification settings