fix audio glitch at 60Hz in Teensy nofrendo from Krzysztof

MCUME_teensy/teensynofrendo/nes_emu.c

@@ -91,7 +91,7 @@ static int osd_init_sound(void)
 
 void osd_getsoundinfo(sndinfo_t *info)
 {
-   info->sample_rate = 22050;
+   info->sample_rate = (22050*20000)/16666; // fix for 60Hz
    info->bps = 16;
 }
 

MCUME_teensy/teensynofrendo/teensynofrendo.ino

@@ -210,7 +210,7 @@ void setup() {
 #endif  
   emu_init(); 
 
-  myTimer.begin(vblCount, 20000);  //to run every 20ms  
+  myTimer.begin(vblCount, 16666);  //to run every 16.6666ms  
 }
 
 // ****************************************************