Test area:
Click on the music
icons below to
download a music file.
homer -duh!
If you are unable to hear these sounds get Winamp

see a music score
If you cannot see the musical notation get Scorch
Do you have a program that allows you open a wav file and transform the waveform by adding delay effects, time-stretching and so on?
If you do not have an Audio Editor get Cool Edit
winamp plays midi, wav and mp3 files
reads sibelius notation
coolpro is free but cooledit pro costs money when the trial period is finished