Include both Core Audio source type and transport type in description.
Implement fetching Core Audio device UID.
Upgrade nibs.
Set SDK root to current (10.10 as of this writing).
10.8 minimum OS (only because it’s inconvenient for me to test on earlier versions).
Move the soundsource directory out of the way so the binary can be packaged at the top level.
Don’t try to install the man page somewhere that can’t be written.

Speaking of writing the man page, need to do that too.
Packaging script; ignore products.
soundsource 3.0

I’m not planning on releasing the somewhat-broken menubar app, but this seems like a sensible way to start an official release of the command-line tool.