diff --git a/copyparty/__main__.py b/copyparty/__main__.py
index 32037b64..c7014e0e 100644
--- a/copyparty/__main__.py
+++ b/copyparty/__main__.py
@@ -271,7 +271,7 @@ def run_argparse(argv, formatter):
     ap2.add_argument("--no-mtag-mt", action="store_true", help="disable tag-read parallelism")
     ap2.add_argument("-mtm", metavar="M=t,t,t", action="append", type=str, help="add/replace metadata mapping")
     ap2.add_argument("-mte", metavar="M,M,M", type=str, help="tags to index/display (comma-sep.)",
-        default="circle,album,.tn,artist,title,.bpm,key,.dur,.q,.vq,.aq,acodec,vcodec,res,.fps")
+        default="circle,album,.tn,artist,title,.bpm,key,.dur,.q,.vq,.aq,ac,vc,res,.fps")
     ap2.add_argument("-mtp", metavar="M=[f,]bin", action="append", type=str, help="read tag M using bin")
     ap2.add_argument("--srch-time", metavar="SEC", type=int, default=30, help="search deadline")
 
diff --git a/copyparty/httpcli.py b/copyparty/httpcli.py
index b87eac37..88b223d1 100644
--- a/copyparty/httpcli.py
+++ b/copyparty/httpcli.py
@@ -1117,7 +1117,7 @@ class HttpCli(object):
         self.send_headers(
             length=upper - lower,
             status=status,
-            mime=guess_mime(req_path)[0],
+            mime=guess_mime(req_path),
         )
 
         logmsg += unicode(status) + logtail
diff --git a/copyparty/util.py b/copyparty/util.py
index fc554e3e..c8485d0c 100644
--- a/copyparty/util.py
+++ b/copyparty/util.py
@@ -75,6 +75,13 @@ IMPLICATIONS = [
 ]
 
 
+MIMES = {
+    "md": "text/plain; charset=UTF-8",
+    "opus": "audio/ogg; codecs=opus",
+    "webp": "image/webp",
+}
+
+
 REKOBO_KEY = {
     v: ln.split(" ", 1)[0]
     for ln in """
@@ -945,13 +952,12 @@ def unescape_cookie(orig):
 
 
 def guess_mime(url, fallback="application/octet-stream"):
-    if url.endswith(".md"):
-        return ["text/plain; charset=UTF-8"]
+    try:
+        _, ext = url.rsplit(".", 1)
+    except:
+        return fallback
 
-    if url.endswith(".webp"):
-        return ["image/webp"]
-
-    return mimetypes.guess_type(url) or fallback
+    return MIMES.get(ext) or mimetypes.guess_type(url)[0] or fallback
 
 
 def runcmd(*argv):