Mixxx 2.3.1

What's new in this version:

- Added mapping for the Numark DJ2GO2 Touch controller
- Added mapping for the Numark Mixtrack Pro FX controller
- Updated mapping for Behringer DDM4000 mixer
- Updated mapping for Denon MC7000 controller
- Hercules Inpulse 300: Add better FX controls and other minor improvements
- Denon MC7000: Improve slip mode and jog wheel handling
- Disabled detection of keyboards and mice as HID controllers
- Disabled detection of all HID controllers with Apple’s vendor ID. Apple doesn’t build actual controllers
- Add support for HiDPI scale factors of 125% and 175% (only with Qt 5.14+)
- Fix unhandled exception when parsing corrupt Rekordbox PDB files
- Fix Echo effect adding left channel samples to right channel
- Fix bad phase seek when starting from preroll
- Fix bad phase seek when a channel’s audible status changes
- Tango skin: Show crossfader assign buttons by default
- Fix keyfinder library in arm64 builds
- Fix wrong track being recorded in History
- Fix support for relative paths in the skin system which caused missing images in third-party skins
- Fix relocation of directories with special/reserved characters in path name
- Update keyboard shortcuts sheet
- Library: resize the Played checkbox and BPM lock with the library font
- Don’t allow Input focus on waveforms
- Fix performance issue on AArch64 by enabling flush-to-zero for floating-point arithmetic
- Fix custom key notation not restored correctly after restart
- Traktor S3: Disable scratch when switching decks to prevent locked scratch issue
- FFmpeg: Ignore inaudible samples before start of stream
- Controller Preferences: Don’t automatically enable checkbox if controller is disabled
- Tooltips: Always show tooltips in preferences
- Tooltips: Use item label for tooltips in library side bar and show ID when debugging
- Library sidebar: Also activate items on PageUp/Down events
- Fix handling of preview button cell events in developer mode
- Auto DJ: Fix bug which could make an empty track stop Auto DJ
- Fix Auto DJ skipping tracks randomly
- Fix high CPU load due to extremely high internal sync clock values
- Fix preference option for re-analyzing beatgrids imported from other software

Packaging:
- It is no longer necessary to manually copy the udev rule file in packaging scripts. Now pkg-config is used to determine the udevdir used to install the rules file in the CMake install step when CMAKE_INSTALL_PREFIX is / or /usr
- Various build issues on FreeBSD are fixed
- .desktop file has be renamed to org.mixxx.Mixxx.desktop according to Freedesktop standards
- Uses system provided hidapi library if version >= 0.10.1
- Please update PortAudio to 19.7 if you have not done so already. This is required for Mixxx to work with PipeWire via the JACK API for many devices.
- Install multiple sizes of rasterized icons
- CMake: Fixed detection of SoundTouch pkgconfig file and version
- Fix AppStream metainfo