diff --git a/.gitignore b/.gitignore
index b6e4761..2b82e86 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,9 @@ __pycache__/
 # C extensions
 *.so
 
+# VSCode
+.vscode
+
 # Distribution / packaging
 .Python
 build/
@@ -27,6 +30,9 @@ share/python-wheels/
 *.egg
 MANIFEST
 
+# OSX cruft
+.DS_Store
+
 # PyInstaller
 #  Usually these files are written by a python script from a template
 #  before PyInstaller builds the exe, so as to inject date/other infos into it.
diff --git a/CITATION b/CITATION
new file mode 100644
index 0000000..9f4ae3a
--- /dev/null
+++ b/CITATION
@@ -0,0 +1,6 @@
+@article{Forsgren_Martiros_2022,
+  author = {Forsgren, Seth* and Martiros, Hayk*},
+  title = {{Riffusion - Stable diffusion for real-time music generation}},
+  url = {https://riffusion.com/about},
+  year = {2022}
+}
diff --git a/README.md b/README.md
index 2fd615a..30864df 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ Tested with Python 3.9 and diffusers 0.9.0.
 
 To run this model, you need a GPU with CUDA. To run it in real time, it needs to be able to run stable diffusion with approximately 50 steps in under five seconds.
 
-You need to make sure you have torch and torchaudio installed with CUDA support. See the [install guide](https://pytorch.org/get-started/locally/) or [stable wheels](https://download.pytorch.org/whl/torch_stable.html). 
+You need to make sure you have torch and torchaudio installed with CUDA support. See the [install guide](https://pytorch.org/get-started/locally/) or [stable wheels](https://download.pytorch.org/whl/torch_stable.html).
 
 ```
 conda create --name riffusion-inference python=3.9
@@ -32,14 +32,16 @@ python -m pip install -r requirements.txt
 
 If torchaudio has no audio backend, see [this issue](https://github.com/riffusion/riffusion/issues/12).
 
+You can open and save WAV files with pure python. For opening and saving non-wav files – like mp3 – you'll need ffmpeg or libav.
+
 Guides:
 * [CUDA help](https://github.com/riffusion/riffusion/issues/3)
 * [Windows Simple Instructions](https://www.reddit.com/r/riffusion/comments/zrubc9/installation_guide_for_riffusion_app_inference/)
 
-## Run
+## Run the model server
 Start the Flask server:
 ```
-python -m riffusion.server --port 3013 --host 127.0.0.1
+python -m riffusion.server --host 127.0.0.1 --port 3013
 ```
 
 You can specify `--checkpoint` with your own directory or huggingface ID in diffusers format.
@@ -77,6 +79,52 @@ Example output (see [InferenceOutput](https://github.com/hmartiro/riffusion-infe
 }
 ```
 
+Use the `--device` argument to specify the torch device to use.
+
+`cuda` is recommended.
+
+`cpu` works but is quite slow.
+
+`mps` is supported for inference, but some operations fall back to CPU. You may need to set
+PYTORCH_ENABLE_MPS_FALLBACK=1. In addition, it is not deterministic.
+
+## Test
+Tests live in the `test/` directory and are implemented with `unittest`.
+
+To run all tests:
+```
+python -m unittest test/*_test.py
+```
+
+To run a single test:
+```
+python -m unittest test.audio_to_image_test
+```
+
+To preserve temporary outputs for debugging, set `RIFFUSION_TEST_DEBUG`:
+```
+RIFFUSION_TEST_DEBUG=1 python -m unittest test.audio_to_image_test
+```
+
+To run a single test case:
+```
+python -m unittest test.audio_to_image_test -k AudioToImageTest.test_stereo
+```
+
+To run tests using a specific torch device, set `RIFFUSION_TEST_DEVICE`. Tests should pass with
+`cpu`, `cuda`, and `mps` backends.
+
+## Development
+Install additional packages for dev with `pip install -r dev_requirements.txt`.
+
+* Linter: `ruff`
+* Formatter: `black`
+* Type checker: `mypy`
+
+These are configured in `pyproject.toml`.
+
+The results of `mypy .`, `black .`, and `ruff .` *must* be clean to accept a PR.
+
 ## Citation
 
 If you build on this work, please cite it as follows:
diff --git a/dev_requirements.txt b/dev_requirements.txt
index b10ce3e..a37435b 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -1,6 +1,7 @@
 black
 ipdb
-isort
 mypy
-pylint
+ruff
+types-Flask-Cors
+types-Pillow
 types-requests
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..c6fb776
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,87 @@
+[tool.black]
+line-length = 100
+
+[tool.ruff]
+line-length = 100
+
+# Which rules to run
+select = [
+    # Pyflakes
+    "F",
+    # Pycodestyle
+    "E",
+    "W",
+    # isort
+    # "I001"
+]
+
+ignore = []
+
+# Exclude a variety of commonly ignored directories.
+exclude = [
+    ".bzr",
+    ".direnv",
+    ".eggs",
+    ".git",
+    ".hg",
+    ".mypy_cache",
+    ".nox",
+    ".pants.d",
+    ".ruff_cache",
+    ".svn",
+    ".tox",
+    ".venv",
+    "__pypackages__",
+    "_build",
+    "buck-out",
+    "build",
+    "dist",
+    "node_modules",
+    "venv",
+]
+per-file-ignores = {}
+
+# Allow unused variables when underscore-prefixed.
+dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+
+# Assume Python 3.10.
+target-version = "py310"
+
+[tool.ruff.mccabe]
+# Unlike Flake8, default to a complexity level of 10.
+max-complexity = 10
+
+[tool.mypy]
+python_version = "3.10"
+
+[[tool.mypy.overrides]]
+module = "argh.*"
+ignore_missing_imports = true
+
+[[tool.mypy.overrides]]
+module = "diffusers.*"
+ignore_missing_imports = true
+
+[[tool.mypy.overrides]]
+module = "plotly.*"
+ignore_missing_imports = true
+
+[[tool.mypy.overrides]]
+module = "pydub.*"
+ignore_missing_imports = true
+
+[[tool.mypy.overrides]]
+module = "scipy.fft.*"
+ignore_missing_imports = true
+
+[[tool.mypy.overrides]]
+module = "scipy.io.*"
+ignore_missing_imports = true
+
+[[tool.mypy.overrides]]
+module = "torchaudio.*"
+ignore_missing_imports = true
+
+[[tool.mypy.overrides]]
+module = "transformers.*"
+ignore_missing_imports = true
diff --git a/requirements.txt b/requirements.txt
index 57edf91..84aa270 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,9 +6,11 @@ flask
 flask_cors
 numpy
 pillow
+plotly
 pydub
 scipy
 soundfile
+streamlit
 torch
 torchaudio
 transformers