The audio test files are based on the track "Drum up" by the Italian rock band Stoop.

The song has been licensed under CC Attribution-NonCommercial 2.5 license. It was the winner in the Diesel music contest 2006 in the rock / indie music category:
http://www.diesel.com/#/cult/music/

You can download the song here:
http://www.diesel.com/wy_content/downloads/seccion/mp3/Rock-Italy.zip

Original MP3 version converted to PCM WAVE with CDex:
http://cdexos.sourceforge.net/

Downsampled and cut with Audacity:
http://audacity.sourceforge.net/

OGG version created with DropOGGXPed:
http://www.rarewares.org/ogg.html

ACM version created with SND2ACM:
http://return0.pisem.net/audio.html