Update app.py

app.py

@@ -26,7 +26,7 @@ PRIMARY_COLOR = os.environ.get("PRIMARY_COLOR", "#6B5BFF")  # UI accent only
 MAX_SECS = int(os.environ.get("MAX_SECS", "15"))        # keep clips short for ZeroGPU window
 TARGET_H = int(os.environ.get("TARGET_H", "480"))       # downscale target height
 SR       = int(os.environ.get("TARGET_SR", "48000"))    # WAV sample rate
-ZEROGPU_DURATION = int(os.environ.get("ZEROGPU_DURATION", "110"))  # <= platform maximum
+ZEROGPU_DURATION = int(os.environ.get("ZEROGPU_DURATION", "110"))  # must be <= platform limit
 
 def sh(cmd: str):
     print(">>", cmd)
@@ -113,13 +113,14 @@ def prepare_once():
 
 prepare_once()
 
-# ---- Friendly dependency check (so the error is clear) -----------------------
+# ---- Friendly dependency check (correct package name) ------------------------
 try:
-    import audiotools  # noqa: F401
+    import audiotools  # provided by the PyPI package 'descript-audiotools'
 except Exception as e:
     raise RuntimeError(
-        "Missing dependency 'audiotools'. "
-        "Add 'audiotools>=0.7.2' to requirements.txt and restart the Space."
+        "Missing module 'audiotools'. Install it via the PyPI package "
+        "'descript-audiotools' (e.g., add 'descript-audiotools>=0.7.2' "
+        "to requirements.txt) and restart the Space."
     ) from e
 
 # Now safe to import their internals