The International Association of Language Learning Technology recently did a research project featuring the Genesis Language Lab system.  IALLT is a professional organization with members worldwide.  See below for some excerpts from that article:

"Genesis is a full-featured computer management and communication system that allows central control over student computers and distributed audio-video resources within a Local Area Network. It is specifically designed for language instruction, though can also be used for the teaching of other subjects. Depending on network bandwidth, it can support up to eight classes of 120 students each on the same subnet. Provided that they are on the same subnet, instructors as well as students may be physically located anywhere.

The Genesis interface is based on the metaphor of a virtual computer lab.  Its operation is commendably user-friendly and transparently simple.

Genesis is an excellent computer management system that also provides the essential features of a traditional language lab. Its multi-functionality and reasonable pricing makes it well worth considering..."