It is easy to install. Just go to the site and follow the directions. There is also a STeem Mailing list if you want to ask the programmers specific questions on the Emulator. The Official STeem Site. Download My Midi Files created on Atari Computers with examples of algo-comp applications.
Lurkers are welcome as well, but partisipation is more welcome.
See the M and MSG page for links to examples. There are three types of subscription to Atari-Midi. You get one email each day with all the messages for the day contained in the one message in your In-Box. This option is good if you don't like a lot of messages in your In-Box, but would like to see what is happening in the Atari Scene. However, you might miss something this way.