libsaria: Fix playing songs from outside of library

The song was loading, but attributes weren't updating.  I also use this
patch to begin playback when a song is loaded (I was tired of manually
pressing play every time)

libsaria/path/files.py

@@ -24,7 +24,9 @@ def open_xml(file):
 
 def open_music(file):
 	try:
+		libsaria.sources.cur_id = None
 		libsaria.controls.load(file)
+		libsaria.controls.play()
 	except Exception, e:
 		print e
 

libsaria/sources/__init__.py

@@ -16,7 +16,7 @@ cur_id = None
 def inc_count():
 	attrs.inc_count(get_attrs("id")[0])
 
-def find_attrs(file, *attrs):
+def find_attrs(file, *attr_list):
 	if file == None:
 		return
 	track = library.track.Track(file)
@@ -25,7 +25,7 @@ def find_attrs(file, *attrs):
 	id    = library.update.song_id(file)
 	get   = track.__dict__.get
 	res   = []
-	for attr in attrs:
+	for attr in attr_list:
 		if attr == "id":
 			res.append(id)
 		elif attr == "like":