The sound quality is less than perfect, but you won't mind, I promise.
There's a 45-minute interview with Ralph Eggleston up on the Spline Doctors blog. You can also find it by searching for "SplineCast" at iTunes.
All short film makers should certainly download the file and listen in, as well as production designers, art directors, animation buffs or any of Pixar's legion of fans. The Spline Doctors remains amongst the very best of all blogs to be found in the whole wide worldy web.
In this, and previous SplineCasts, they've revealed plenty of exciting Pixar news. They've confirmed that both Pete Docter, director of Monsters Inc., and Andrew Stanton, director of Finding Nemo, are working on new films at Pixar, and that Eggleston is designing for the latter.