Silly question... what object is the reverse of [spigot~]?

[spigot~] has one input which can be thrown to one of two outputs using a toggle swtich.

Is there an object that can take two incoming audio streams and allow you to switch between them to one output?

[multiplex~ 0 1]

Check out its help. You can use it to handle more than two signal if you wish.

Perfect, very useful.