I have a soundtrack edition with Japanese subtitles (not the documentary itself), which was originally released by Hummingbird Records. Click here, and scroll down:

HBDVD001 -
Various - Bringing It All Back Home
(not compatible with the USA or Canada)
Originally released as the soundtrack for a five hour BBC documentary special , this music DVD, the first produced by an Irish Independent Label, re - edited and re - mastered, offers a series of rare performances, exclusive interviews and a totally interactive menu. It includes performances from Paul Brady, Mary Black, Emmylou Harris and many more.