Yes, in porn the term "ass" usually stands in for anal sex, though "piece of ass" still means more generic a form of humping. So this set of a dozen old scenes from Adam & Eve is merely catering to anal porn fanatics.
One of the scene is termed "New Scene", it being unreleased at the time -2011- the DVD was issued. Lauren Phoenix is fresh and beautiful as always, and Rick Masters is the lucky stud who gets to service her in a variety of anal positions.
Rest of the show is random, with a couple of 3-way highlights: Brit Porn stars McKenzie Lee and Sophie Dee teaming up to hump Evan Stone in an "A-Team" parody, and superstars Jenna Haze and Alexis Texas taking on Mr. Pete.