Both tracks are from a CD titled "Ultraviolet" (the YouTube piece is "Orange", the mp3 is album title track "Ultraviolet") for which I haven't tracked down North American availability yet. However, one of his other CDs is available through Amazon.ca (I jumped it to the top of my wishlist queue and have it on order), and the same CD, plus a second, are available through Amazon.com. There are other titles for sale via secondhand markets on both Amazons.
P.S. Unofficial Alleyne-Johnson website here, with a couple more mp3s!