--- a/bin/ascoltami	Mon Jun 09 07:06:31 2008 +0000
+++ b/bin/ascoltami	Mon Jun 09 07:07:10 2008 +0000
@@ -36,10 +36,11 @@
 
 from optparse import OptionParser
 import os,math,time
+from rdflib import URIRef
 import Tkinter as tk
-#import logging
-#log = logging.getLogger()
-#log.setLevel(logging.DEBUG)
+import logging
+log = logging.getLogger()
+log.setLevel(logging.DEBUG)
 
 from twisted.internet import reactor,tksupport
 from twisted.internet.error import CannotListenError
@@ -109,7 +110,9 @@
     def __init__(self):
 
         self.mpd = Mpd()
-        reactor.connectTCP(*(networking.mpdServer()+(self.mpd,)))
+        args = (networking.mpdServer()+(self.mpd,))
+        log.info("connecting to %r", args)
+        reactor.connectTCP(*args)
 
         self.state = tk.StringVar()
         self.state.set("stop") # 'stop' 'pause' 'play'
@@ -261,10 +264,10 @@
 
 
 class GoButton:
-    def __init__(self, player, statusLabel, songPaths):
+    def __init__(self, player, statusLabel, songURIs):
         self.player = player
         self.statusLabel = statusLabel
-        self.songPaths = songPaths
+        self.songURIs = songURIs
 
         self.player.current_time.trace("w", self.updateStatus)
 
@@ -273,12 +276,11 @@
         if state == 'stop':
             currentPath = self.player.song_uri
             try:
-                i = self.songPaths.index(currentPath) + 1
+                i = self.songURIs.index(currentPath) + 1
             except ValueError:
                 i = 0
-            nextPath = self.songPaths[i]
-            return ("next song %s" % shortSongPath(nextPath,
-                                                   self.songPaths),
+            nextPath = self.songURIs[i]
+            return ("next song %s" % shortSongPath(nextPath, self.songURIs),
                     lambda: self.player.play(nextPath))
 
         if state == 'pause':
@@ -493,12 +495,14 @@
 def main():
     global graph
     parser = OptionParser()
+    parser.add_option('--show',
+        help='show URI, like http://light9.bigasterisk.com/show/dance2008')
     graph = showconfig.getGraph()
     (options, songfiles) = parser.parse_args()
 
     if len(songfiles)<1:
         graph = showconfig.getGraph()
-        playList = graph.value(L9['show/dance2007'], L9['playList'])
+        playList = graph.value(URIRef(options.show), L9['playList'])
         songs = list(graph.items(playList))
     else:
         raise NotImplementedError("don't know how to make rdf song nodes from cmdline song paths")

--- a/light9/showconfig.py	Mon Jun 09 07:06:31 2008 +0000
+++ b/light9/showconfig.py	Mon Jun 09 07:07:10 2008 +0000
@@ -54,10 +54,11 @@
     raise ValueError("can't find music_directory in any mpd config file")
 
 
+def songInMpd(song):
+    """
+    get the mpd path (with correct encoding) from the song URI
 
-def songInMpd(song):
-
-    """mpd only works off its own musicroot, which for me is
+    mpd only works off its own musicroot, which for me is
     /my/music. song is a file in musicDir; this function returns a
     version starting with the mpd path, but minus the mpd root itself.
     the mpc ~/.mpdconf
@@ -67,20 +68,15 @@
 
     assert isinstance(song, URIRef), "songInMpd now takes URIRefs"
 
-    mpdHome = findMpdHome()
-    
-    songFullPath = songOnDisk(song)
-    if not songFullPath.startswith(mpdHome):
-        raise ValueError("the song path %r is not under your MPD music_directory (%r)" % (songFullPath, mpdHome))
-        
-    mpdRelativePath = songFullPath[len(mpdHome):]
-    if path.join(mpdHome, mpdRelativePath) != songFullPath:
-        raise ValueError("%r + %r doesn't make the songpath %r" % (mpdHome, mpdRelativePath, songFullPath))
-    return mpdRelativePath.encode('ascii')
+    mpdPath = getGraph().value(song, L9['showPath'])
+    if mpdPath is None:
+        raise ValueError("no mpd path found for subject=%r" % song)
+    return mpdPath.encode('ascii')
 
 def songOnDisk(song):
+    """given a song URI, where's the on-disk file that mpd would read?"""
     graph = getGraph()
-    songFullPath = path.join(root(), graph.value(song, L9['showPath']))
+    songFullPath = path.join(findMpdHome(), graph.value(song, L9['showPath']))
     return songFullPath
 
 def songFilenameFromURI(uri):