[kupfer] rhythmbox: Define repr_key for collection source

[Ulrik Sverdrup <usverdrup src gnome org>]

commit c6db80337cf2ee09723c41867f77acbcd53870d6
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Thu Jan 14 17:01:26 2010 +0100

    rhythmbox: Define repr_key for collection source

 kupfer/plugin/rhythmbox.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/kupfer/plugin/rhythmbox.py b/kupfer/plugin/rhythmbox.py
index e9fab9f..6d961ba 100644
--- a/kupfer/plugin/rhythmbox.py
+++ b/kupfer/plugin/rhythmbox.py
@@ -180,6 +180,8 @@ class CollectionSource (Source):
 	def get_items(self):
 		for song in self.leaf.object:
 			yield SongLeaf(song)
+	def repr_key(self):
+		return self.leaf.repr_key()
 	def get_description(self):
 		return self.leaf.get_description()
 	def get_thumbnail(self, w, h):