You could simply plug a mic into your soundcard and use Windows "Sound Recorder" to record the poem etc.
A file would be created with a .wav extension (wave file) which you could then burn straight onto a CD and listen to using a standard CD player.
Wave files are generally quite large, so you might consider converting these files into mp3 format. You could still burn the mp3's onto a cd and play on a PC. Many newer CD players can play mp3.
Converters found at www.download.com - search for "wav to mp3"