Amy Winehouse - How can I get audio downloads of DVDs for Dingle, Porchester concerts?

At one point, DVDs were available through the BBC / iTunes-Australia of Amy's concerts in Dingle ("BBC Arena:  The Day She Came to Dingle") and Porchester ("BBC One Sessions:  Live at Porchester Hall".)

Does anyone know how I could get ahold of these DVD soundtracks as lossless audio downloads?

Thanks for all your help!