Here are links to web pages with MP3 files and lyrics of the songs. Songs in bold have been selected to be in the show.
On each of the pages linked to (above) should appear an image suggestive of a tape player; its exact appearance will depend on what software your computer and your browser use. Click on what appears to be a "Play" button to hear the music. There also should be the other controls usually found on tape players to stop, pause, rewind, etc.
Note that since this is not streaming audio. If you are using a dial-up connection, you will have to wait for most of the MP3 file to download before you play it. If you are listening to it and the sound suddenly stops, the download is probably not complete. It will resume automatically.