콘텐츠 기능 추가

app/src/main/res/drawable/audio_content_player_seekbar.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@android:id/background">
+        <shape>
+            <solid android:color="@color/color_cc979797" />
+        </shape>
+    </item>
+    <item android:id="@android:id/secondaryProgress">
+        <clip>
+            <shape>
+                <solid android:color="@color/color_cc979797" />
+            </shape>
+        </clip>
+    </item>
+    <item android:id="@android:id/progress">
+        <clip>
+            <shape>
+                <solid android:color="@color/color_9970ff" />
+            </shape>
+        </clip>
+    </item>
+</layer-list>