There are a range of datasets and code for experimenting with auditory cognitive decoding.  Here is a selection.  See also the Auditory EEG Decoding Challenge for more resources and ideas.

Datasets

There are a number of experiments where the data has been published for all to use.  In general these data are for auditory attention decoding: given brain waves, often EEG, figure out the relation to the audio that is heard, thus characterizing audio attention.

• Spreadsheet of available data  (Thanks to Simon Geirnaert)

• Forest Gump MEG

Code

• Telluride Decoding Toolbox

• Mick Cross - mTRF Toolbox