REAPER 6.80 (64-bit)

What's new in this version:

CLAP
- do not apply plugin PDC/latency to MIDI events if the plugin produces MIDI output
- fix interpolating parameter values in first buffer block after playback start
- prevent adding duplicate parameter change events to event queue
- support enumerated parameters with arbitrary range
- add clap_get_reaper_context() API

Command line:
- support passing reascript on command line, for example: 'reaper.exe projectfile.rpp scriptfile.lua'
- support inserting media or running reascripts in already-running REAPER instance, for example: 'reaper.exe -nonewinst media.wav scriptfile.lua'

FX:
- improve anticipative FX scheduling to improve performance with slow media disks
- improve performance of anticipative FX multiprocessing on folder tracks that use PDC
- improve performance of anticipative FX multiprocessing in various other routing contexts

macOS:
- add option in prefs/buffering/advanced to view or change open-file limit
- support controlling existing instance of REAPER via command line (parity with other OSes)

MIDI:
- fix import of .mid files containing unused bytes after the end of the MIDI data
- support entering blank string for default name for in-project MIDI media items

MP3:
- fix off-by-one-sample initial latency when decoding
- make end of file peaks display consistent with other types

ReaScript:
- improve Lua documentation for some third-party functions
- improve documentation for Track/TakeFX_GetPreset()

Render:
- flush FX when normalizing audio during video render
- resolve '..' in render file name
- support $directory, $directory2, etc wildcards, representing the project directory parent (parent's parent, etc) on disk

VST:
- do not apply PDC to MIDI if the plugin generates MIDI events, even if the plugin does not process MIDI input
- fix bridged VST3 initial sizing on Windows

Actions:
- add action to set snap offset for item under mouse to mouse position

Arrange:
- improve auto-scroll behavior when adjusting scrollbars

Audio Units:
- possible fix for occasional crash when loading plug-in state

Automation items:
- support toggling automation items following project default behavior without changing other settings

Customize menu/toolbar:
- display full action description in menu/toolbar entry context menu

Handscroll/zoom:
- improve various behaviors

Linux:
- fix context menu in video output when OpenGL is used

Localization:
- fix UTF-8 text in auto-trim/split dialog

Media explorer:
- do not interrupt project peak building when closing media explorer

Metadata:
- support LRC channel configuration in WAVEFORMATEXTENSIBLE metadata

Mixer:
- if preference disabled to change track selection when clicking track control panel buttons, do not change track selection when clicking master track meter in the mixer

ReaControlMIDI:
- support loading sysex message from file

Regions:
- add action to select/unselect all regions for rendering

Searching:
- fix incorrect matching of latin-1 characters in various filter fields

Takes:
- changing active take via mouse affects grouped media items and tracks even if those tracks are hidden

Track panels:
- add preference to use shift key to control whether drag and drop of track panel creates a folder

Video:
- fix typo in blitter feedback preset

Windows:
- re-support 2GB+ ReaperThemeZip and ReaperConfigZip files (6.57+ regression)