diff --git a/plexapi/client.py b/plexapi/client.py
index 3695b57b..38daa38d 100644
--- a/plexapi/client.py
+++ b/plexapi/client.py
@@ -187,24 +187,27 @@ class PlexClient(PlexObject):
             log.debug('Client %s doesnt support %s controller.'
                       'What your trying might not work' % (self.title, controller))
 
+        proxy = self._proxyThroughServer if proxy is None else proxy
+        query = self._server.query if proxy else self.query
+
         # Workaround for ptp. See https://github.com/pkkid/python-plexapi/issues/244
         t = time.time()
         if t - self._last_call >= 80 and self.product in ('ptp', 'Plex Media Player'):
             url = '/player/timeline/poll?wait=0&commandID=%s' % self._nextCommandId()
-            if proxy:
-                self._server.query(url, headers=headers)
-            else:
-                self.query(url, headers=headers)
+            query(url, headers=headers)
             self._last_call = t
 
         params['commandID'] = self._nextCommandId()
         key = '/player/%s%s' % (command, utils.joinArgs(params))
 
-        proxy = self._proxyThroughServer if proxy is None else proxy
-
-        if proxy:
-            return self._server.query(key, headers=headers)
-        return self.query(key, headers=headers)
+        try:
+            return query(key, headers=headers)
+        except ElementTree.ParseError:
+            # Workaround for players which don't return valid XML on successful commands
+            #   - Plexamp: `b'OK'`
+            if self.product in ('Plexamp',):
+                return
+            raise
 
     def url(self, key, includeToken=False):
         """ Build a URL string with proper token argument. Token will be appended to the URL