If you load a folder of audio into a a [polybuffer~] object, it will flood the various buffers with audio, mono and stereo.

If you want the [groove~] object for the buffer to output stereo channels, simply specify that with an argument in the object box.

For example, if after loading a folder with various stereo audio tracks into a polybuffer called "mybuffer", the [groove~] objects might look something like this:

sorry if this is a completely stupid question but how do you get the data you pasted from your patch back into a .maxpat format that I can read?

I tried copying your code into text edit, saving it as blah.txt, then changing the file extension to .maxpat in finder but max gives me some funny errors when I double-click on the file:

error parsing patcher file Polybuffer.maxpat;

parsing object: line=1, char=3, text='...{\'

Any help greatly appreciated!

just paste it straight away in an empty max patcher