An important feature of a (mu)-storage ring (nu)-source is that it can be extended to the possibility of a future high-energy muon collider. The neutrino source provides a useful physics device that initiates key technologies required for future (mu)(sup +)-(mu)(sup (minus)) Colliders, but with much less demanding parameter requirements. These technologies include high-intensity (mu)-production, (mu)-capture, (mu)-cooling, (mu)-acceleration and multiturn (mu) storage rings. (mu)(sup +)-(mu)(sup (minus)) colliders require a similar number of muons, but they require that the muons be cooled to a much smaller phase space and formed into a small number of bunches, and both positive and negative bunches must be simultaneously captured. These differences are discussed, and the extension of the (nu)-source to (mu)(sup +)-(mu)(sup (minus)) collider specifications is described.