REAPER 6.67 (64-bit)

What's new in this version:

MIDI:
- add actions to insert retroactively recorded MIDI
- fix incorrect ordering of certain notes in MIDI_GetRecentInputEvent
- improve MIDI replace recording corner cases
- when recording new MIDI items, show all CC data in one lane
- update arrange view when changing CC lanes in MIDI editor

Localization:
- add a few missing localized strings
- fix langpack definition for new media import page help text
- improve appearance of envelope window with width scaling
- improve auto-sizing/scaling for controls embedded in various file open/save dialogs
- improve control auto-resizing on Windows when used with dialog scaling
- improve macOS handling of strings that have a key prefix for Windows
- support media explorer size units

Project bay:
- add option to disable grouping similar FX in FX tab
- add option to show track numbers in track column
- add performance column to FX tab
- avoid unnecessary metadata cache flushing
- display idle status for FX when applicable
- preserve selection when changing FX online/bypass, presets
- default new folders to expanded

VST:
- fix VST2 to VST3 migration state conversion
- fix VST2 to VST3 migration mapping for plug-ins with non-alphanumeric characters in their names
- fix incorrect parameter changes being sent to bridged VST3 in certain instances
- avoid crashing reaper when a bridged VST3 crashes
- do not show default preset name of 'Program 1' for plug-ins that do not have multiple programs
- improve locking behavior when loading presets

Region manager:
- add option to add/remove child tracks to render list when adding/removing parent
- option to display track dropdown list nested by folder is disabled by default
- support sorting by "Info" column
- when not displaying track dropdown list nested by folder, indent tracks in folders

Region render matrix:
- support forcing individual track+region combinations to mono/stereo/multichannel render by right-clicking in region render matrix
- support selecting regions (for rendering selected regions) via click on region number or context menu
- simplify context menu
- recalculate scrollbar size/position when expanding/collapsing tracks or when region names change

Actions:
- add action to build selected item peaks if necessary
- respect preferences to trim media behind items, or auto-crossfade, when running action "move to media source preferred position"

JSFX:
- allow reading #dbg_desc from code
- fix timing of MIDI Arpeggiator

Linux:
- fix right-doubleclick behavior in MIDI editor keys
- fix doubleclick in track area going to correct context

Media explorer:
- enable metadata editing menu items for .aif
- fix incoherent file size display for certain sizes

Peak building:
- avoid full peakbuild rescan when inserting media
- optimize for very large projects

Performance meter:
- add option to show FX CPU as worst-block (for diagnosing problematic realtime plug-ins)
- display track media CPU use (includes resampling, take FX, timestretch, etc)

Render:
- add button to display rendered file in Media Explorer
- don't automatically replace .mp4 extension when setting video or audio encoder to "none"
- fix embedding markers when rendering selected media items and project has customized start offset
- Routing/Grouping/Region render matrix
- remove "view mode" options from context menu, because dropdown is always available
- improve appearance with very long track/group/region names

Spectral edits:
- fix hit testing of the bottom edge of the last channel
- increase the size of edge/corner hit test regions slightly

Video:
- fix re-enabling DirectShow media reading on Windows using dshow_depr
- fix video FX when applied to MIDI files that have a playrate greater than 1.0

AIFF:
- support reading ID3 metadata embedded in .aif files

Batch converter:
- add dropdown to choose how many CPU cores to use

Custom action editor:
- allow longer action names to display when window is resized large

Filenames:
- allow more than 10,000 similarly named filenames to be generated

FX CPU Metering:
- improve full accounting of CPU use (from oversampling, bypass envelope, etc)

Glue:
- ensure per-take FX are reinitialized prior to glue

macOS:
- improve mouse hit testing/cursor testing consistency on retina displays/subpixel input devices

Project metadata:
- support sorting metadata list by category

Razor edits:
- fix media item mouse modifier to extend razor edits to item

ReaScript IDE:
- improve handling of maximize state/docking/etc

ReaSurroundPan:
- fix influence of height speakers in Auro 11.1 and 13.1 setups
- Routing/Grouping matrix
- improve appearance of folder expand/collapse icons

SD2/PCM/RAW:
- support reading preferred file position from resource file (after importing .sd2 file, run "move to media source preferred position" to move imported files to their position in the original project)

User prompts:
- use OK/Cancel for various proceed/cancel prompts rather than Yes/No
- Virtual MIDI keyboard
- highlight notes being played by armed track inputs

Windows:
- fix shortcut creation for DX plug-ins

WMF:
- use .m4a extension when rendering audio-only MPEG-4 files