diff --git a/src/api-impl/android/media/AudioManager.java b/src/api-impl/android/media/AudioManager.java
index f2c0388f..1be737a7 100644
--- a/src/api-impl/android/media/AudioManager.java
+++ b/src/api-impl/android/media/AudioManager.java
@@ -48,4 +48,8 @@ public class AudioManager {
 	public boolean isWiredHeadsetOn() {
 		return false;
 	}
+
+	public void setStreamVolume(int streamType, int index, int flags) {
+		System.out.println("AudioManager.setStreamVolume: >" + streamType + "< >" + index + "< >" + flags + "<");
+	}
 }
diff --git a/src/api-impl/android/widget/ProgressBar.java b/src/api-impl/android/widget/ProgressBar.java
index 47f1d00f..f552b24b 100644
--- a/src/api-impl/android/widget/ProgressBar.java
+++ b/src/api-impl/android/widget/ProgressBar.java
@@ -78,6 +78,10 @@ public class ProgressBar extends View {
 	}
 
 	public void setProgress(int progress) {
+		if (progress > max)
+			progress = max;
+		else if (progress < 0)
+			progress = 0;
 		this.progress = progress;
 		native_setProgress(widget, progress / (float)max);
 	}
@@ -96,4 +100,8 @@ public class ProgressBar extends View {
 	}
 
 	public native void native_setIndeterminate(boolean indeterminate);
+
+	public void incrementProgressBy(int diff) {
+		setProgress(progress + diff);
+	}
 }