Installation

Download the latest release zip from Releases, then place plugin files in your system plugin folders.

Release package contents

Platform	Minimum OS	Stem separation	Included binaries
Windows x64	Windows 10	On-demand ONNX Runtime bundle (CPU or DirectML GPU)	`INTERSECT.vst3`, `INTERSECT.exe`
Linux x64	Ubuntu 22.04+ (glibc 2.35+)	On-demand ONNX Runtime bundle (CPU / NVIDIA CUDA 12 / NVIDIA CUDA 13 / AMD MIGraphX)	`INTERSECT.vst3`, `INTERSECT` (standalone)
macOS arm64 (Apple Silicon)	macOS 10.13 (High Sierra)	On-demand ONNX Runtime bundle (CoreML)	`INTERSECT.vst3`, `INTERSECT.component`, `INTERSECT.app`
macOS x64 (Intel)	macOS 10.13 (High Sierra)	Not available — ONNX Runtime 1.24 dropped x86_64 macOS support	`INTERSECT.vst3`, `INTERSECT.component`, `INTERSECT.app`

Plugin zips are small (single-digit MB); the ONNX Runtime required for stem separation is downloaded on demand from inside the plugin — see Stem separation setup.

Plugin install paths

Format	Windows	macOS	Linux
VST3	`C:\Program Files\Common Files\VST3\`	`~/Library/Audio/Plug-Ins/VST3/`	`~/.vst3/`
AU	n/a	`~/Library/Audio/Plug-Ins/Components/`	n/a

After copying files, rescan plugins in your DAW.

macOS — clear quarantine on first launch

INTERSECT release builds are unsigned, so macOS may report on first launch that INTERSECT is “damaged” or “cannot be opened”. Clear the quarantine flags from a Terminal:

xattr -cr ~/Library/Audio/Plug-Ins/VST3/INTERSECT.vst3
xattr -cr ~/Library/Audio/Plug-Ins/Components/INTERSECT.component
xattr -cr /Applications/INTERSECT.app

Then re-launch your DAW (or the standalone app) and rescan plugins.

Stem separation setup

Stem separation requires two on-demand downloads performed from inside the plugin. Both live under SET → Stem Separation in the header bar.

ONNX Runtime bundle — open SET → Stem Separation → ONNX Runtime and pick the bundle that matches your platform and (optionally) your GPU. Only one bundle is active at a time; installing a different one switches which runtime the plugin loads. Restart INTERSECT after the install completes so the new runtime is picked up.
Stem model — open SET → Stem Separation → Download Models and pick a BS-RoFormer model.

After both are installed, open a sample’s STEMS button to export.

GPU runtime requirements (per ONNX Runtime bundle)

Windows — DirectML — no extra installs required. Works with any GPU vendor (NVIDIA, AMD, Intel) on Windows 10+ with a recent DirectX 12-capable driver.
macOS arm64 — CoreML — no extra installs required. Uses the built-in Apple Neural Engine / GPU.
macOS x64 (Intel Mac) — stem separation is not available. ONNX Runtime 1.24 dropped x86_64 macOS support.
Linux — NVIDIA CUDA 12 or CUDA 13 — pick the bundle that matches the CUDA runtime installed on your system. Requirements:
- NVIDIA proprietary driver
- CUDA runtime — libcudart.so.12 for the CUDA 12 bundle, libcudart.so.13 for the CUDA 13 bundle
- cuDNN 9 (libcudnn.so.9)
Install on Arch: sudo pacman -S cuda cudnn Install on Ubuntu: sudo apt install nvidia-cuda-toolkit libcudnn9-cuda-12 (adjust the cuDNN package name to match your CUDA version)

Flatpak DAW hosts, such as the Flatpak build of Bitwig Studio, may need extra library-path configuration even when GPU access is enabled in Flatseal. If the standalone app can use CUDA but the Flatpak-hosted plugin reports OrtSessionOptionsAppendExecutionProvider_Cuda: Failed to load shared library, add these environment variables to the DAW in Flatseal. CUDA install paths vary by distro — use the one that matches yours:
```
# Arch (CUDA installed at /opt/cuda)
LD_LIBRARY_PATH=/opt/cuda/lib64:/usr/lib/x86_64-linux-gnu/GL/lib
LD_PRELOAD=/run/host/usr/lib/libcudnn.so.9
```
```
# Ubuntu/Debian (CUDA installed at /usr/local/cuda)
LD_LIBRARY_PATH=/usr/local/cuda/lib64:/usr/lib/x86_64-linux-gnu/GL/lib
LD_PRELOAD=/run/host/usr/lib/libcudnn.so.9
```
Linux — AMD MIGraphX — requires ROCm installed. See AMD’s ROCm install guide. Experimental.
Linux — CPU — no extra installs required.

If a GPU runtime is missing or fails to load at export time, INTERSECT shows the error in the header status bar instead of silently failing; you can then switch DEVICE to CPU or install the missing runtime.

Verify your install

Open your DAW and rescan plugins. INTERSECT should appear as an instrument plugin from “INTERSECT”.
Add it to a track and confirm the editor opens.
Drag any short audio file onto the waveform — it should load and display.
The plugin version is shown at the bottom of the SET popup; use it when filing issues.

Updating

To update to a newer release, download the latest zip and overwrite the existing files in the install paths above, then restart your DAW. Your themes, settings, and saved sessions persist across updates — they live in the per-user settings folder, not in the plugin bundle.

Uninstall

Delete the plugin file(s) from the install paths in the table above, then rescan in your DAW.

To wipe your user data as well — themes, UI scale, NRPN settings, sample-browser bookmarks, stem model folder — delete the INTERSECT settings folder for your OS:

OS	Settings folder
Windows	`%APPDATA%\Roaming\INTERSECT\`
macOS	`~/Library/Application Support/INTERSECT/`
Linux	`~/.config/INTERSECT/`

Downloaded ONNX Runtime bundles and stem models live in this folder too, so removing it also frees up that disk space. See the Settings file page for what gets stored where.