diff --git a/FSStorage.py b/FSStorage.py
index 6d2225d..7915714 100644
--- a/FSStorage.py
+++ b/FSStorage.py
@@ -12,6 +12,7 @@ import itertools
 import os
 import sets
 import stat
+import urlparse
 
 from DIDLLite import Container, StorageFolder, Item, VideoItem, AudioItem, TextItem, ImageItem, Resource, ResourceList
 from twisted.web import resource, server, static
@@ -198,7 +199,7 @@ class FSItem(FSObject, Item):
 		kwargs['content'] = DynamicTrans(self.FSpath,
 		    static.File(self.FSpath, mimetype))
 		Item.__init__(self, *args, **kwargs)
-		self.url = '%s/%s' % (self.cd.urlbase, self.id)
+		self.url = urlparse.urljoin(self.cd.urlbase, self.id)
 		self.mimetype = mimetype
 		self.checkUpdate()
 
diff --git a/ZipStorage.py b/ZipStorage.py
index 649268a..413b47b 100644
--- a/ZipStorage.py
+++ b/ZipStorage.py
@@ -8,6 +8,8 @@ import itertools
 import os.path
 import sets
 import time
+import urlparse
+
 import iterzipfile
 zipfile = iterzipfile
 import itertarfile
@@ -170,7 +172,7 @@ class ZipFile(ZipItem, Item):
 		kwargs['content'] = ZipResource(self.zf, self.name,
 		    self.mimetype)
 		Item.__init__(self, *args, **kwargs)
-		self.url = '%s/%s' % (self.cd.urlbase, self.id)
+		self.url = urlparse.urljoin(self.cd.urlbase, self.id)
 		self.res = Resource(self.url, 'http-get:*:%s:*' % self.mimetype)
 		self.res.size = self.zi.file_size
 
diff --git a/dvd.py b/dvd.py
index ffe9e0d..e176e4f 100644
--- a/dvd.py
+++ b/dvd.py
@@ -10,6 +10,7 @@ default_audio_lang = 'en'
 import itertools
 import os
 import sets
+import urlparse
 
 import sys
 sys.path.append('mpegts')
@@ -114,7 +115,7 @@ class DVDChapter(VideoItem):
 		    p = audio.pos: audiofilter(i, 0x80 + p))
 		VideoItem.__init__(self, *args, **kwargs)
 
-		self.url = '%s/%s' % (self.cd.urlbase, self.id)
+		self.url = urlparse.urljoin(self.cd.urlbase, self.id)
 		self.res = Resource(self.url, 'http-get:*:video/mpeg:*')
 		#self.res.size = self.chapter.size
 
@@ -132,7 +133,7 @@ class DVDTitle(StorageFolder):
 		    p = audio.pos: audiofilter(itertools.chain(*dt), 0x80 + p))
 		StorageFolder.__init__(self, *args, **kwargs)
 
-		self.url = '%s/%s' % (self.cd.urlbase, self.id)
+		self.url = urlparse.urljoin(self.cd.urlbase, self.id)
 		self.res = Resource(self.url, 'http-get:*:video/mpeg:*')
 
 		# mapping from path to objectID
diff --git a/mpegtsmod.py b/mpegtsmod.py
index 7d07688..e65380f 100644
--- a/mpegtsmod.py
+++ b/mpegtsmod.py
@@ -13,6 +13,7 @@ import itertools
 import os
 import sets
 import struct
+import urlparse
 
 import sys
 mpegtspath = 'mpegts'
@@ -293,7 +294,7 @@ class MPEGTS(FSObject, VideoItem):
 		VideoItem.__init__(self, *args, **kwargs)
 		FSObject.__init__(self, path)
 
-		self.url = '%s/%s' % (self.cd.urlbase, self.id)
+		self.url = urlparse.urljoin(self.cd.urlbase, self.id)
 		self.res = Resource(self.url, 'http-get:*:video/mpeg:*')
 
 	def doUpdate(self):
diff --git a/pymeds.py b/pymeds.py
index 3fa426a..1bf3414 100755
--- a/pymeds.py
+++ b/pymeds.py
@@ -106,7 +106,10 @@ def makeService(config):
 	if uuid is None:
 		uuid = generateuuid()
 
-	urlbase = 'http://%s:%d/' % (listenAddr, listenPort)
+	# XXX - may cause troubles if people aren't using urljoin, add a / to
+	# the first empty string arg to troubleshoot
+	urlbase = urlparse.urlunparse(('http', '%s:%s' % (listenAddr,
+	    listenPort), '', '', '', ''))
 
 	# Create SOAP server and content server
 	from twisted.web import server, resource, static
diff --git a/shoutcast.py b/shoutcast.py
index 81c097d..7d87d91 100644
--- a/shoutcast.py
+++ b/shoutcast.py
@@ -15,6 +15,7 @@ import ConfigParser
 import StringIO
 import os.path
 import random
+import urlparse
 
 import traceback
 
@@ -284,11 +285,11 @@ class ShoutStation(AudioItem):
 		kwargs['content'] = ShoutProxy(self.station['PLS_URL'],
 		    self.station['MimeType'].encode('ascii'))
 		AudioItem.__init__(self, *args, **kwargs)
-		self.url = '%s/%s' % (self.cd.urlbase, self.id)
+		self.url = urlparse.urljoin(self.cd.urlbase, self.id)
 		self.res = Resource(self.url, 'http-get:*:%s:*' % \
 		    self.station['MimeType'].encode('ascii'))
-		#self.res = Resource(self.url + '/pcm', 'http-get:*:%s:*' % \
-		#    'audio/x-wav')
+		#self.res = Resource(urlparse.urljoin(self.url, 'pcm'),
+		#    'http-get:*:%s:*' % 'audio/x-wav')
 		self.bitrate = self.station['Bitrate'] * 128 # 1024k / 8bit
 
 class ShoutGenre(MusicGenre):