VAC is intended to connect several audio applications together in real time. It's like a sound card with hardwired input and output: when an application sends an audio stream to a virtual cable, other applications can record this stream from the other cable end. Thus, you can record and process output of almost any audio application by almost any other audio application. VAC operates like TotalRecorder but is more universal. Use it to create a chains of software synthesizers (Generator, Reality), audio processors, recorders (WaveLab, Sound Forge, Adobe Audition), sequencers (Cakewalk, Cubase), Internet Telephony/Voice applications (Skype) etc. VAC is a native 32- and 64-bit WDM PnP driver and works under Windows 2k/XP/2k3/Vista.

Features :

Windows 2000/XP/2003/Vista platforms (32-bit and 64-bit)
Local session only (not available from Remote Desktop).
Native WDM/KS audio technology.
Up 256 Virtual Cables (Windows limits number of MME devices to 32. Number of DirectSound devices is not limited). Trial version is limited to 2 cables only.
1..20 milliseconds per interrupt.
1..100 pin instances.
Almost any of fixed point PCM audio formats (200..1000000 samples per second, 8..32 bits per sample, 1..8 channels). Floating point formats are not supported.
Almost no sound latency with maximal interrupt frequency.
Unlimited number of clients connected to each port.
Signal mixing (with saturation) between output port clients.
PCM format conversion.
Volume control features.
Control Panel application to dynamically configure cables.
Audio Repeater application that transfers from any Wave In to any Wave Out port.

Platform: Windows 2000, Windows XP, Windows 2003, Windows Vista

System Requirements: Any suitable for 32- and 64-bit Windows