Is it possible to use [netsend] and [netreceive] with signal data, for example if I wanted to stream audio from a patch on one computer to a patch on another?

If so, what would that look like in a patch?

The mrpeach externals have [udpsend~] and [udpreceive~]

This is an old post but for anyone who may have ended up reading I found a useful workaround with Soundflower. It's a free plugin for routing audio between programs, available through Rogue Amoeba and originally through Cycling '74

If not Soundflower, you can use Jack for that..

udpsend~-help.pd
udpreceive~-help.pd