12 Irish Folk Songs: Duets for Soprano and Tenor Recorder or C Instruments in Treble Clef (violin, flute, oboe)

I really like the collection--and am wondering where I can get the video/audio snippets to Paul Young's books that are featured in the Amazon listings. For a not-so-great musician like me, it helps to be able to hear the pieces. Are these things downloadable from somewhere? Thanks.