There is a public paraslash stream at www.paraslash.org, streaming the music of Henri Petterson. You can listen to the stream with any mp3 player that supports http streaming. Both
mpg123 -Z http://www.paraslash.org:8009/and
are known to work.
Moreover, there is an anonymous paraslash account available which you can use to have a look at paraslash without configuring and running para_server on your own box. Just download and run this shell script on your Unix system. No root-privileges are required.