The sign up page is here:
http://tinyurl.com/gacsp-signup
Pick your chunk, type you name into the sign p field so everyone else knows you've claimed that chunk, and follow the download link to download your chunk in mp3 format.
There are 11 chunks total. Each chunk is ~6 minutes of audio, which based on my rather basic math should be ~100 gismu in each chunk.
When you have completed your chunk, place all the files into an archive and email them to me. Then, if you like, grab another chunk. If you don't like, go do something else.