Virtual Audio Cable software version 4.60 is a tool that allows you to transfer audio streams between applications and devices. It provides a virtual cable that can be used to connect audio sources and destinations, allowing you to route audio in real-time. The software also includes configurable buffer sizes and sample rates, as well as support for up to 256 virtual cables. Additionally, it offers a range of other features, such as mixing, recording, and playback, making it a versatile tool for audio professionals.