freeware

In computing, a softphone is a software program for making telephone calls over the Internet using a general purpose computer, rather than using dedicated hardware. Often a softphone is designed to behave like a traditional telephone,

For the global visualization of time zones and clocks on your desktop (freeware):

Desktop Sun Tracker 

http://www.herethere.net/dt/

This software displays two versions of the world map, a day, and a night version, and fades between them to show which portions of the world are in daylight, and which aren't. In other words, this is a dynamic wallpaper that updates based on where the sun is relative to the surface of the earth.

Breitling World Time

Try using an Amplifier with an Equalizer (built-in one) to boost the energy of some of the audio bands. Many are like guitar amplifiers (with a MIDI input for instruments), but look for softwares that have a Microphone input, like this one: