[LAU] matrix mixer?

[michael noble]

I haven't come across anything before, but has anyone come across a
matrix mixer, either in plugin or standalone form for Linux? Something
similar to the matrix mixer objects in AudioMulch or the Acousmodule
VSTs. I am aware of a couple of examples in PD, and googling brings up
links to SuperCollider emails, but I would rather a more ready made
approach if possible.

thanks
Michael