You're welcome 
As soon as it was possible to use custom ringtones, i did so. I particularly remember my old Samsung GSM phone, where you had to encode the ringtones in some fancy compressed wav format and transfer it via cable onto the device. You also had to compress the hell out of the audio to swamp the noise of the compression algorithm. This was long before touchscreens and even years ahead of 3G.

Thanks to the links here, i can use a variety of modem sounds (and dramatic orchestral pieces), as i like to assign distinct tones to special individuals.
When my mother is calling, the harmonica signature from Ennio Morricone's "C'era una volta il West" goes off