diff --git a/copyparty/httpcli.py b/copyparty/httpcli.py
index b81145d7..988d5593 100644
--- a/copyparty/httpcli.py
+++ b/copyparty/httpcli.py
@@ -436,12 +436,12 @@ class HttpCli(object):
             if "ups" in self.uparam:
                 return self.tx_ups()
 
-            if "h" in self.uparam:
-                return self.tx_mounts()
-
             if "k304" in self.uparam:
                 return self.set_k304()
 
+            if "h" in self.uparam:
+                return self.tx_mounts()
+
         # conditional redirect to single volumes
         if self.vpath == "" and not self.ouparam:
             nread = len(self.rvol)
diff --git a/copyparty/up2k.py b/copyparty/up2k.py
index a80168fb..caeae0eb 100644
--- a/copyparty/up2k.py
+++ b/copyparty/up2k.py
@@ -1447,10 +1447,13 @@ class Up2k(object):
             if not nchunk:
                 raise Pebkac(400, "unknown chunk")
 
-            if wark in job["busy"]:
-                raise Pebkac(400, "that chunk is already being written to")
+            if chash in job["busy"]:
+                nh = len(job["hash"])
+                idx = job["hash"].index(chash)
+                m = "that chunk is already being written to:\n  {}\n  {} {}/{}\n  {}"
+                raise Pebkac(400, m.format(wark, chash, idx, nh, job["name"]))
 
-            job["busy"][wark] = 1
+            job["busy"][chash] = 1
 
         job["poke"] = time.time()
 
@@ -1465,7 +1468,7 @@ class Up2k(object):
         with self.mutex:
             job = self.registry[ptop].get(wark)
             if job:
-                job["busy"].pop(wark, None)
+                job["busy"].pop(chash, None)
 
         return [True]
 
@@ -1479,7 +1482,7 @@ class Up2k(object):
             except Exception as ex:
                 return "confirm_chunk, wark, " + repr(ex)
 
-            job["busy"].pop(wark, None)
+            job["busy"].pop(chash, None)
 
             try:
                 job["need"].remove(chash)
diff --git a/copyparty/web/browser.js b/copyparty/web/browser.js
index b70acc49..fbfd46b3 100644
--- a/copyparty/web/browser.js
+++ b/copyparty/web/browser.js
@@ -1225,6 +1225,22 @@ var audio_eq = (function () {
 		QS('input.eq_gain[band="amp"]').value = r.amp;
 	};
 
+	r.stop = function () {
+		if (r.filters.length)
+			for (var a = 0; a < r.filters.length; a++)
+				r.filters[a].disconnect();
+
+		r.filters = [];
+
+		if (!mp)
+			return;
+
+		if (mp.acs)
+			mp.acs.disconnect();
+
+		mp.acs = null;
+	};
+
 	r.apply = function () {
 		r.draw();
 
@@ -1234,16 +1250,7 @@ var audio_eq = (function () {
 		if (!actx || !mp.au || (!r.en && !mp.acs))
 			return;
 
-		if (mp.acs) {
-			for (var a = 0; a < r.filters.length; a++)
-				r.filters[a].disconnect();
-
-			r.filters = [];
-			mp.acs.disconnect();
-			mp.acs = null;
-		}
-
-
+		r.stop();
 		mp.au.id = mp.au.id || Date.now();
 		mp.acs = r.acst[mp.au.id] = r.acst[mp.au.id] || actx.createMediaElementSource(mp.au);
 
@@ -4946,6 +4953,7 @@ ebi('files').onclick = ebi('docul').onclick = function (e) {
 
 function reload_mp() {
 	if (mp && mp.au) {
+		audio_eq.stop();
 		mp.au.pause();
 		mp.au = null;
 	}