|  | @@ -386,7 +386,7 @@ int squeezelite_main(int argc, char **argv) {
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				|  |  |  			optarg = NULL;
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				|  |  |  			optind += 1;
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				|  |  |  		} else {
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				|  |  | -			fprintf(stderr, "\nOption error: -%s\n\n", opt);
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				|  |  | +			LOG_ERROR("=> Option error: -%s", opt);
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				|  |  |  			usage(argv[0]);
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				|  |  |  			exit(1);
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				|  |  |  		}
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				|  | @@ -437,7 +437,7 @@ int squeezelite_main(int argc, char **argv) {
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				|  |  |  					if (!strcmp(l, "all") || !strcmp(l, "ir"))        log_ir     = new;
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				|  |  |  #endif
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				|  |  |  				} else {
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				|  |  | -					fprintf(stderr, "\nDebug settings error: -d %s\n\n", optarg);
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				|  |  | +					LOG_ERROR("=> Debug settings error: -d %s", optarg);
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				|  |  |  					usage(argv[0]);
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				|  |  |  					exit(1);
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				|  |  |  				}
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				|  | @@ -451,7 +451,7 @@ int squeezelite_main(int argc, char **argv) {
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				|  |  |  				int byte = 0;
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				|  |  |  				char *tmp;
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				|  |  |  				if (!strncmp(optarg, "00:04:20", 8)) {
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				|  |  | -					LOG_ERROR("ignoring mac address from hardware player range 00:04:20:**:**:**");
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				|  |  | +					LOG_ERROR("=> ignoring mac address from hardware player range 00:04:20:**:**:**");
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				|  |  |  				} else {
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				|  |  |  					char *t = strtok(optarg, ":");
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				|  |  |  					while (t && byte < 6) {
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				|  | @@ -689,14 +689,14 @@ int squeezelite_main(int argc, char **argv) {
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				|  |  |  			exit(0);
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				|  |  |  			break;
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				|  |  |  		default:
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				|  |  | -			fprintf(stderr, "Arg error: %s\n", argv[optind]);
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				|  |  | +			LOG_ERROR("=> arg error: %s", argv[optind]);
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				|  |  |  			break;
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				|  |  |  		}
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				|  |  |  	}
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				|  |  |  
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				|  |  |  	// warn if command line includes something which isn't parsed
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				|  |  |  	if (optind < argc) {
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				|  |  | -		fprintf(stderr, "\nError: command line argument error\n\n");
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				|  |  | +		LOG_ERROR("=> command line argument error");
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				|  |  |  		usage(argv[0]);
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				|  |  |  		exit(1);
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				|  |  |  	}
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				|  | @@ -806,7 +806,7 @@ int squeezelite_main(int argc, char **argv) {
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				|  |  |  #endif
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				|  |  |  
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				|  |  |  	if (name && namefile) {
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				|  |  | -		fprintf(stderr, "-n and -N option should not be used at same time\n");
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				|  |  | +		LOG_ERROR("=> -n and -N option should not be used at same time");
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				|  |  |  		exit(1);
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				|  |  |  	}
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