You might be interested in axoloti: http://www.axoloti.com/ http://www.axoloti.com/ Stereo input/output, midi in/out, and it can function as a USB host to clas

You might be interested in axoloti: http://www.axoloti.com/ http://www.axoloti.com/ Stereo input/output, midi in/out, and it can function as a USB host to class-compliant usb/midi devices. Programmable using a puredata-esque visual programming editor, but you can also extend it with C.