Sound Forge has in the studio for eons. It is the tool of choice for mastering compact disc or making a sound track for a DVD. Sound Force can also handle a multitrack system for feature films and games.
Avid Pro Audio has a 16+ track plus MIDI tracks capability. Pro Audio can be mixed down easily to any final format desired.
Audacity is an open source tool that has capabilities galore. It came out in May 28, 2000 and it has become more popular than any commercial tool out there.
Dolby Atmos technology allows up to 128 audio tracks plus associated spatial audio description metadata (most notably, location or pan automation data) to be distributed to theaters for optimal, dynamic rendering to loudspeakers based on the theater capabilities. Each audio track can be assigned to an audio channel, the conventional format for distribution, or to an audio “object.” Dolby Atmos in theaters has a 10-channel 9.1 bed for ambience stems or center dialogue, leaving 118 tracks for objects.
IMAX theaters use Dolby Atmos and mostly there are 6 or 8 satellite speakers on the ceiling along with the primary sound system behind the screen. IMAX uses sound reflection to enhance the ambience,
Home theater systems typically have 5.1 or 7.1 setups so feature film editing has to consider what to put on the optical disc.