Peep is a network monitoringtool that represents network information via an audio interface. Network diagnostics are made not only based on single network events but whether the network sounds "normal".
The sound art work and netowrk tool - PingHarp is used to see if a computer is operating and reachable over the network like 'PING'. In addition, PingHarp bring you a nice different sound according to round-trip time and distance of the target host.