Wormhole2 is dependent on Steinberg's VSTSDK, which is not open-source. In order to build the binaries you'll need the VSTSDK 2.4 as well as some additional files. These files contain parts of the VSTSDK and are available solely from plasq as they cannot be open-sourced.

Wormhole2 is for audio professionals and musicians, allowing routing of audio between machines on a network. Now you can make use of all the processing power in your studio. For example; set aside a machine for complex instruments or effects, route audio out to it, then back into your favorite DAW. Or route audio between your PCs and Macs to get the best of both worlds. Or share audio between laptops on stage. Or or or... there are lots of possibilities!