Test Patterns -
This is a screen color testing applet
Server 1 Afreecodec
A free and fun way to test your speakers and enjoy 3D sound at the same time.
Generates audio test signals, AIFF files
It generates Window's RIFF Wave Format audio files with stereo
Wav Test Tone is a wav file test tone generator utility.
It enables you change the look & feel of your desktop to whatever you want