diff -dNur a/src/library/basesqltablemodel.cpp b/src/library/basesqltablemodel.cpp
--- a/src/library/basesqltablemodel.cpp	2015-12-29 17:10:41.000000000 +0100
+++ b/src/library/basesqltablemodel.cpp	2017-02-04 21:33:39.403861857 +0100
@@ -559,7 +559,7 @@
             if (column == fieldIndex(ColumnCache::COLUMN_LIBRARYTABLE_DURATION)) {
                 int duration = value.toInt();
                 if (duration > 0) {
-                    value = Time::formatSeconds(duration, false);
+                    value = Time::formatSeconds(duration);
                 } else {
                     value = QString();
                 }
diff -dNur a/src/library/browse/browsethread.cpp b/src/library/browse/browsethread.cpp
--- a/src/library/browse/browsethread.cpp	2015-12-29 17:10:41.000000000 +0100
+++ b/src/library/browse/browsethread.cpp	2017-02-04 21:32:23.605066421 +0100
@@ -185,8 +185,7 @@
         item->setData(item->text(), Qt::UserRole);
         row_data.insert(COLUMN_COMMENT, item);
 
-        QString duration = Time::formatSeconds(qVariantValue<int>(
-                tio.getDuration()), false);
+        QString duration = Time::formatSeconds(tio.getDuration());
         item = new QStandardItem(duration);
         item->setToolTip(item->text());
         item->setData(item->text(), Qt::UserRole);
diff -dNur a/src/library/cratefeature.cpp b/src/library/cratefeature.cpp
--- a/src/library/cratefeature.cpp	2015-12-29 17:10:41.000000000 +0100
+++ b/src/library/cratefeature.cpp	2017-02-04 21:30:54.962474898 +0100
@@ -493,7 +493,7 @@
             crateListTableModel.index(row, durationColumn)).toInt();
         m_crateList.append(qMakePair(id, QString("%1 (%2) %3")
                                      .arg(name, QString::number(count),
-                                          Time::formatSeconds(duration, false))));
+                                          Time::formatSeconds(duration))));
     }
 }
 
diff -dNur a/src/library/playlistfeature.cpp b/src/library/playlistfeature.cpp
--- a/src/library/playlistfeature.cpp	2015-12-29 17:10:41.000000000 +0100
+++ b/src/library/playlistfeature.cpp	2017-02-04 21:33:06.920378091 +0100
@@ -168,7 +168,7 @@
             playlistTableModel.index(row, durationColumn)).toInt();
         m_playlistList.append(qMakePair(id, QString("%1 (%2) %3")
                                         .arg(name, QString::number(count),
-                                             Time::formatSeconds(duration, false))));
+                                             Time::formatSeconds(duration))));
     }
 }
 
diff -dNur a/src/trackinfoobject.cpp b/src/trackinfoobject.cpp
--- a/src/trackinfoobject.cpp	2015-12-29 17:10:41.000000000 +0100
+++ b/src/trackinfoobject.cpp	2017-02-04 21:42:36.423323807 +0100
@@ -293,7 +293,7 @@
     int iDuration = m_iDuration;
     lock.unlock();
 
-    return Time::formatSeconds(iDuration, false);
+    return Time::formatSeconds(iDuration);
 }
 
 void TrackInfoObject::setLocation(const QString& location) {
diff -dNur a/src/util/time.cpp b/src/util/time.cpp
--- a/src/util/time.cpp	2017-02-04 21:29:44.439595305 +0100
+++ b/src/util/time.cpp	2017-02-04 21:37:54.739803100 +0100
@@ -1,5 +1,7 @@
 #include "util/time.h"
 
+#include "util/assert.h"
+
 // static
 LLTIMER Time::s_timer;
 // static
@@ -8,7 +10,7 @@
 qint64 Time::s_testElapsed_nsecs = 0;
 
 // static
-QString Time::formatSeconds(double dSeconds, bool showCentis) {
+QString Time::formatSeconds(double dSeconds, Precision precision) {
     if (dSeconds < 0) {
         return "?";
     }
@@ -24,13 +26,14 @@
             (days > 0 ? (QString::number(days) %
                          QLatin1String("'d', ")) : QString()) %
             QLatin1String(days > 0 || t.hour() > 0 ? "hh:mm:ss" : "mm:ss") %
-            QLatin1String(showCentis ? ".zzz" : "");
+            QLatin1String(Precision::SECONDS == precision ? "" : ".zzz");
 
     QString timeString = t.toString(formatString);
 
     // The format string gives us milliseconds but we want
     // centiseconds. Slice one character off.
-    if (showCentis) {
+    if (Precision::CENTISECONDS == precision) {
+        DEBUG_ASSERT(1 <= timeString.length());
         timeString = timeString.left(timeString.length() - 1);
     }
 
diff -dNur a/src/util/time.h b/src/util/time.h
--- a/src/util/time.h	2017-02-04 21:29:44.439595305 +0100
+++ b/src/util/time.h	2017-02-04 21:41:01.476833822 +0100
@@ -55,10 +55,17 @@
         s_testElapsed_nsecs = elapsed * 1000000;
     }
 
-    // The standard way of formatting a time in seconds. Used for display of
-    // track duration, etc. showCentis indicates whether to include
-    // centisecond-precision or to round to the nearest second.
-    static QString formatSeconds(double dSeconds, bool showCentis);
+    enum class Precision {
+        SECONDS,
+        CENTISECONDS,
+        MILLISECONDS
+    };
+
+    // The standard way of formatting a time in seconds. Used for display
+    // of track duration, etc.
+    static QString formatSeconds(
+            double dSeconds,
+            Precision precision = Time::Precision::SECONDS);
 
   private:
     static LLTIMER s_timer;
diff -dNur a/src/widget/wnumberpos.cpp b/src/widget/wnumberpos.cpp
--- a/src/widget/wnumberpos.cpp	2015-12-29 17:10:41.000000000 +0100
+++ b/src/widget/wnumberpos.cpp	2017-02-04 21:41:57.023950430 +0100
@@ -92,10 +92,10 @@
     QString valueString;
     if (valueMillis >= 0) {
         valueString = m_skinText % Time::formatSeconds(
-                valueMillis / Time::kMillisPerSecond, true);
+                valueMillis / Time::kMillisPerSecond, Time::Precision::MILLISECONDS);
     } else {
         valueString = m_skinText % QLatin1String("-") % Time::formatSeconds(
-                -valueMillis / Time::kMillisPerSecond, true);
+                -valueMillis / Time::kMillisPerSecond, Time::Precision::CENTISECONDS);
     }
     setText(valueString);
 }