This driver uses the Win32 audio system to provide GAUDIO play and record channels. For PLAY - It supports 2 channels, Channel 0 being a mono channel and Channel 1 being a stereo channel. For RECORD - It supports 2 channels, Channel 0 being a mono channel and Channel 1 being a stereo channel. For stereo, the samples are interleaved. Remember to allocate enough space for two samples per sample period. This is a simple driver that makes no changes to the mixer so set up the audio mixer using the windows control panel audio mixer before starting recording/playback.