Apologies if this has already been posted - did various keyword searches of the board and couldn't find anything!
I noticed that Classic FM's "Saturday Night At The Movies" ( http://www.classicfm.com/radio/shows/saturday-night-movies/ ) has an interview with Ron Howard in this weekend's (October 15th) edition. The show is available to stream. This article has a brief audio excerpt from it about Horner:
Also, on Saturday last (15th) Howard Shore was Matthew Sweet's guest on his 'Sounds of Cinema' show on BBC Radio 3. It should be available on their iPlayer Radio app and is well worth listening to.