Hailed by critics and embraced by fans to the tune of nine million copies sold since its release, the multi-award-winning soundtrack album, 'O Brother, Where Art Thou?,' will celebrate its tenth anniversary with a deluxe two-CD set, due August 16.  A total of 17 new tracks will be available, in addition to the original disc which featured 19 old-time, bluegrass and country tunes by such artists as Alison Krauss, Gillian Welch, Ralph Stanley and the Cox Family and of course Dan Tymiski whose vocal rendition of "Man of constant sorrow" was lip-synched by George Clooney in the critically-acclaimed Coen brothers film.