diff --git a/data/stack.json b/data/stack.json
index 3d545ce..a7d752f 100644
--- a/data/stack.json
+++ b/data/stack.json
@@ -63,6 +63,7 @@
     "audiodsp:src/circuitpython_spike": "build support, nothing to import",
     "audiodsp:src/cp_compat": "build support, nothing to import",
     "audiodsp:src/cpython": "build support, nothing to import",
+    "audiodsp:src/mp_libc_shim.c": "build support, nothing to import",
     "audiodsp:src/mpaudio_modules.c": "build support, nothing to import",
     "audiodsp:src/shared": "build support, nothing to import"
   },
@@ -137,6 +138,7 @@
     {"name": "audioinstruments", "group": "sound", "does": "Play synthesizers, organs, electric pianos and drum machines, each a patch on a virtual rack.", "repo": "audioinstruments", "path": "lib/audioinstruments", "guide": "README.md", "get": ["mip:audioinstruments", "pip:omnipython-audioinstruments", "firmware"], "runs": "MP, CP, Desktop"},
     {"name": "audioeffects", "group": "sound", "does": "Add compressors, EQs, reverbs, delays, modulation, drive, amp simulation and pitch shifters.", "repo": "audioeffects", "path": "lib/audioeffects", "guide": "README.md", "get": ["mip:audioeffects", "pip:omnipython-audioeffects", "firmware"], "runs": "MP, CP, Desktop"},
     {"name": "audioairwindows", "group": "sound", "does": "Use Chris Johnson's Airwindows plug-ins in an audio graph.", "repo": "airwindows", "path": "README.md", "get": ["clone", "firmware"], "runs": "MP, Desktop"},
+    {"name": "btaudio", "group": "sound", "does": "Make a classic ESP32 a Bluetooth speaker: play from a phone or computer, with the title and controls.", "repo": "micropython-pydevices", "path": "modules/btaudio", "get": ["firmware"], "runs": "MP on classic ESP32"},
     {"name": "picotts", "group": "sound", "does": "Make a board with PSRAM speak, with no network and no computer.", "repo": "micropython-pydevices", "path": "modules/picotts", "get": ["firmware"], "runs": "MP"},
     {"name": "mpvst", "group": "sound", "does": "Run Python instruments and effects in your DAW as a VST3 plug-in.", "repo": "mpvst", "path": "README.md", "get": ["download"], "runs": "Desktop DAW"},