Gotcha, I generally just stick to using vanilla, and pick and choose a few externals from extended. I can see how this object would be useful though, perhaps I'll grab it.

Good point. You should also look at the phase vocoding patches if you really want to do some awesome time stretching/contraction. It certainly won't give you a grain-y sound, which might be what you're interested in, but it's very smooth sounding.

They're kind of a lot more difficult to understand, but I definitely like the sound.

You don't have to use a vline/tabread4 for every single sample. You just need to determine the max number of voices that you want to play at any point in time. For example, if you only want to play a max of 4 samples at any point in time, then you only need 4 sample playback subpatches. You can set it up so you load more than 4 samples into your patch, then just use a "set" message to change the buffer you're reading from. I can provide a simple example if you want.

Also, if you're still having trouble with your monome numbers let me know, I can help with that as well.

For doing time stretching/contraction I found examples B.12 and B.13 under the audio examples in the Help Browser of Pd very helpful. diplipito and maelstorm, your patches are pretty similar to what's going on in these examples.
Personally, I've just used a vline~ for the playback position which makes it easy to go forward or reverse. I suppose controlling it is a little messier though.

What does the [arraysize $0_buffer] object do? It doesn't load for me. Does it just return the size of the $0_buffer array?

I'm sure windowing will help with your clicking issue. Maybe this method: http://crca.ucsd.edu/~msp/techniques/latest/book-html/node63.html
would help as well.

I'd imagine that a PA would be better for this kind of situation. I think it should have a flatter frequency response.

When you say you get a lot of foldover at higher frequencies, do you mean that you're aliasing at these frequencies? A sawtooth has a lot of harmonics, so I think higher frequency notes would be more likely to 'foldover' into the negative frequency range. Maybe use the lop~ object and set it at a very high frequency. This would knock down any frequencies that happen to go past the nyquist frequency.

Hopefully this helps some.

In our tests we were able to connect to the localhost and process audio. We are on a local network, just two computers connected to a switch. The problem occurs when trying to send audio to each other's computer.

Which OS are you running?

Also, try this

http://sourceforge.net/project/showfiles.php?group_id=55736&package_id=76015

There's a pd-externals download, and OSC is in there.

It might also be worth noting that the test-netsend~.pd patch that comes with the objects does work when you connect to the 'localhost'. I also got the error message,

netsend~: send tag: Broken pipe (37)

I'm able to connect to a networked computer, but I can't send any audio. draph and I are working on this together, and we're able to send and receive OSC messages on the same network setup.

Any suggestions?