Disable a trace I don't need right now;

error check.

stepmania/src/arch/Sound/DSoundHelpers.cpp

@@ -143,7 +143,8 @@ void DSoundBuf::SetSampleRate(int hz)
 {
 	samplerate = hz;
 	HRESULT hr = buf->SetFrequency(hz);
-	LOG->Trace(hr_ssprintf(hr, "samp"));
+	if(FAILED(hr))
+		RageException::Throw(hr_ssprintf(hr, "buf->SetFrequency(%i)", hz));
 }
 
 void DSoundBuf::SetVolume(float vol)

stepmania/src/arch/Sound/RageSoundDriver_DSound.cpp

@@ -250,7 +250,7 @@ void RageSound_DSound::StartMixing(RageSound *snd)
 	if(stream_pool[i]->state == stream_pool[i]->INACTIVE)
 		stream_pool[i]->state = stream_pool[i]->PLAYING;
 
-	LOG->Trace("new sound assigned to channel %i", i);
+//	LOG->Trace("new sound assigned to channel %i", i);
 }
 
 /* Called by a RageSound; asks us to stop mixing them.  When this