Fix hard-coded 128 block size limits

play_memory.cpp

 			*out++ = ulaw_decode_table[(tmp32 >> 16) & 255];
 			*out++ = ulaw_decode_table[(tmp32 >> 24) & 255];
 		}
-		consumed = 128;
+		consumed = AUDIO_BLOCK_SAMPLES;
 		break;
 
 	  case 0x81: // 16 bit PCM, 44100 Hz
 			*out++ = (int16_t)(tmp32 & 65535);
 			*out++ = (int16_t)(tmp32 >> 16);
 		}
-		consumed = 128;
+		consumed = AUDIO_BLOCK_SAMPLES;
 		break;
 
 	  case 0x02: // u-law encoded, 22050 Hz 
 			*out++ = s4;
 			s0 = s4;
 		}
-		consumed = 64;
+		consumed = AUDIO_BLOCK_SAMPLES/2;
 		break;
 
 	  case 0x82: // 16 bits PCM, 22050 Hz
 			*out++ = s2;
 			s0 = s2;
 		}
-		consumed = 64;
+		consumed = AUDIO_BLOCK_SAMPLES/2;
 		break;
 
 	  case 0x03: // u-law encoded, 11025 Hz
 			*out++ = s4;
 			s0 = s4;
 		}
-		consumed = 32;
+		consumed = AUDIO_BLOCK_SAMPLES/4;
 		break;
 
 	  case 0x83: // 16 bit PCM, 11025 Hz
 			*out++ = s2;
 			s0 = s2;
 		}
-		consumed = 32;
+		consumed = AUDIO_BLOCK_SAMPLES/4;
 		break;
 
 	  default:

synth_dc.cpp

 		// transitioning to a new DC level
 		//count = (target - magnitude) / increment;
 		count = substract_int32_then_divide_int32(target, magnitude, increment);
-		if (count >= 128) {
+		if (count >= AUDIO_BLOCK_SAMPLES) {
 			// this update will not reach the target
 			do {
 				magnitude += increment;