Originally Posted by lekky
Adding New Ringtones/SMS Notifications/Alarms
To add new ringtones or SMS alerts, connect your Desire to USB and mount the device on your PC. Browser to the following folders:
SMS Alerts: /sdcard/media/audio/notifications
Alarm Alerts: /sdcard/media/audio/alarms
Copy your mp3 files into either of the folders above. Then go to:
Ringtone:Settings > sound and display > phone ringtone
SMS: Settings > sound and display > notification sound
Alarms: Set the sound when adding a new alarm.
Then select the ringtone you put in the above folder(s).
Maybe its already known, but I thought I'd point out that the filepaths aren't that important, its the naming and existence of the folder.
Doesn't matter where the Notifications folder sits, as long as there is one, the SMS app will look at it.