diff --git a/dsd.c b/dsd.c
index fad957e..4b1662c 100644
--- a/dsd.c
+++ b/dsd.c
@@ -621,7 +621,7 @@
 
 	dsd2pcm_precalc();
 
-	LOG_INFO("using dsd");
+	LOG_INFO("using dsd to decode dsf,dff");
 	return &ret;
 }
 
diff --git a/faad.c b/faad.c
index 7a2fb72..aa297dc 100644
--- a/faad.c
+++ b/faad.c
@@ -637,5 +637,6 @@
 		return NULL;
 	}
 
+	LOG_INFO("using faad to decode aac");
 	return &ret;
 }
diff --git a/ffmpeg.c b/ffmpeg.c
index bc63381..b96e169 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -712,6 +712,7 @@
 			ff_decode,   // decode
 		};
 		
+		LOG_INFO("using ffmpeg to decode wma,wmap,wmal");
 		return &ret;
 	}
 
@@ -727,6 +728,7 @@
 			ff_decode,   // decode
 		};
 		
+		LOG_INFO("using ffmpeg to decode alc");		
 		return &ret;
 	}
 
diff --git a/flac.c b/flac.c
index 815b0e2..a5c7b3b 100644
--- a/flac.c
+++ b/flac.c
@@ -283,5 +283,6 @@
 		return NULL;
 	}
 
+	LOG_INFO("using flac to decode flc");
 	return &ret;
 }
diff --git a/mad.c b/mad.c
index 9fa7ee4..1605bf9 100644
--- a/mad.c
+++ b/mad.c
@@ -409,5 +409,6 @@
 		return NULL;
 	}
 
+	LOG_INFO("using mad to decode mp3");
 	return &ret;
 }
diff --git a/mpg.c b/mpg.c
index 9e1010c..0657b92 100644
--- a/mpg.c
+++ b/mpg.c
@@ -271,5 +271,6 @@
 
 	m->use16bit = MPG123(m, feature, MPG123_FEATURE_OUTPUT_32BIT);
 
+	LOG_INFO("using mpg to decode mp3");
 	return &ret;
 }
diff --git a/pcm.c b/pcm.c
index c59ea5b..4b6a638 100644
--- a/pcm.c
+++ b/pcm.c
@@ -379,6 +379,6 @@
 		pcm_decode,  // decode
 	};
 
-	LOG_INFO("using pcm");
+	LOG_INFO("using pcm to decode aif,pcm");
 	return &ret;
 }
diff --git a/vorbis.c b/vorbis.c
index e062ac4..7d6c6c9 100644
--- a/vorbis.c
+++ b/vorbis.c
@@ -321,5 +321,6 @@
 		return NULL;
 	}
 
+	LOG_INFO("using vorbis to decode ogg");
 	return &ret;
 }