update to add run task

Makefile

@@ -0,0 +1,5 @@
+default:
+	virtualenv venv && source venv/bin/activate && pip install -r requirements.txt
+
+run:
+	source venv/bin/activate && ./slice.py ${DIR}

README.md

@@ -0,0 +1,2 @@
+run `make` to install it, then do `make DIR=/wherever/your/files/are/ run` to
+run it

slice.py

@@ -48,6 +48,7 @@ def silence(infile):
     convert(infile)
 
 def silence_all():
+    with lcd(argv[1]):
         local("mkdir -p ./shortened")
         fileset = local("ls .", capture=True).split("\n")
         shuffle(fileset)
@@ -55,6 +56,7 @@ def silence_all():
             if f.split(".")[-1] in ["ogg", "opus", "m4a", "mp3"]:
                 try:
                     silence(f)
+                    local("rm -f /tmp/*wav")
                 except Exception:
                     pass