The other major sound award at the Oscars, Sound Editing, deals with the creations of new sounds. Formerly called Sound Effects Editing, this award is given to a film that displays excellence in sound effects, foley, dialogue and ADR. The only two categories you really need to focus on here are Best Sound Editing: Sound Effect and Foley in a Feature Film, and Best Sound Editing: Dialogue and ADR in a Feature film.

SOUND EDITORS GUILD AWARDS

Best Sound Editing: Sound Effects and Foley in a Feature Film

American Sniper (Wesley, Peter, RU:Thomas)
Birdman
Captain America: The Winter Soldier
Dawn of the Planet of the Apes
Fury
Guardians of the Galaxy
Interstellar (Thomas, RU:Wesley)
Unbroken (RU:Peter)

Wesley Lovell: War films do disproportionately well with the Academy, which leads me to believe American Sniper is the leader, but Interstellar‘s focus on naturalistic (well as natural as you can get with a science-fiction film) sound effects, especially those in deep space, may help it win out.
Thomas LaTourette: Interstellar could win over the more recently released American Sniper.

Best Sound Editing: Dialogue and ADR in a Feature Film

Birdman (Peter, Thomas, RU:Wesley)
The Grand Budapest Hotel
The Imitation Game (RU:Peter)
Still Alice
The Theory of Everything
Unbroken
Whiplash (Wesley, RU:Thomas)

Wesley Lovell: Whiplash wouldn’t be your typical winner with this group and I wouldn’t be at all surprised to see Birdman win, but Whiplash has a lot of competing sound, which could give it an edge in this field over more sedate sound effect landscapes.
Thomas LaTourette: Birdman could prevail here over Whiplash.

Best Sound Editing: Sound Effects, Foley, Dialogue, ADR and Music in an Animation Feature Film

Big Hero 6 (Wesley)
The Book of Life
The Boxtrolls (RU:Peter)
How to Train Your Dragon 2 (Thomas, RU:Wesley)
The Lego Movie (Peter, RU:Thomas)

Wesley Lovell: When in doubt, go with the film that has to create the most unique sound effects. How to Train Your Dragon contains quite a bit of recycled material (or at least that’s what voters will likely think) and Disney/Pixar has long been known as one of the preeminent sound studios in the country. That said, I could also see any of the others winning easily.
Thomas LaTourette: Oscar frontrunner Dragon will probably win over the non-nominee The Lego Movie.

Best Sound Editing: Sound Effects, Foley, Dialogue, ADR and Music in a Feature Documentary

America – Imagine a World Without Her
Citizenfour (Peter, Thomas)
Deepsea Challenge 3D (RU:Wesley)
Glen Campbell…I’ll Be Me (RU:Thomas)
Jodorowsky’s Dune (Wesley, RU:Peter)
Under the Electric Sky
Warsaw Uprising

Wesley Lovell: Documentaries aren’t typically known for their complex sound effects creations, but a couple of these selections, including Deepsea Challenge, Jodorowsky’s Dune and Under the Electric Sky are unique enough to have a stronger chance at winning than the others.
Thomas LaTourette: The documentary on Glen Campbell probably is more deserving with all the music they needed to edit in, but Oscar favorite CitizenFour will probably prevail.

Best Sound Editing: Sound Effects, Foley, Dialogue and ADR in a Feature Foreign Language Film

Human Capital (Peter)
The Liberator (RU:Wesley, RU:Peter, RU:Thomas)
The Raid 2 (Wesley, Thomas)
Roar
Uzumasa Limelight

Wesley Lovell: The two most prominent action-heavy films should have the best chance of winning. I give the edge to The Raid 2 simply because it’s far more action-heavy than the more epic scale of The Liberator.
Thomas LaTourette: No clue here. I’ll guess The Raid 2 over The Liberator, but I nothing about these films.

Best Sound Editing: Music in a Feature Film

Birdman (Peter, Thomas, RU:Wesley)
Dawn of the Planet of the Apes
The Fault in Our Stars
Gone Girl
Guardians of the Galaxy (Wesley)
Interstellar (RU:Thomas)
Selma (RU:Peter)

Wesley Lovell: Guardian of the Galaxy had its Awesome Mix of terrific songs from the 1970’s that were effortlessly blended with the soundescape of the universe. I think it holds the edge, but I wouldn’t be surprised to see the percussion-heavy Birdman win out.
Thomas LaTourette: I think Interstellar will come up short here and Birdman will win.

Best Sound Editing: Music in a Musical Feature Film

Annie
Get On Up
Into the Woods (Peter, Thomas, RU:Wesley)
Jersey Boys
Whiplash (Wesley, RU:Peter, RU:Thomas)

Wesley Lovell: Normally, I’d go with the most critically acclaimed musical on the list (Into the Woods), unfortunately Whiplash has better acclaim even if it isn’t a traditional musical film.