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.TH RADIO 1 .SH NAME radio \- receive audio UDP packets transmitted by broadcast .SH SYNOPSIS .B radio [ .BI \-p port ] [ .BI \-v volume ] [ .B \-f ] [ .B \-n ] [ .BI \-c port ] [ .B \-s ] [ .BI \-l addr ] [ .BI -r addr ] [ .B \-d ] .SH DESCRIPTION .I Radio allows you to listen to audio transmitted as UDP packets on a local area network by .IR broadcast (1). Obviously, this requires a workstation with audio hardware; currently the program works on SGI Indigo and 4D/35 worstations, Sun Sparcs, and all NeXTs. .PP .I Radio is normally run in the background. You may need a system-specific tool to change the volume or direct the output to the speaker or headphone jack; e.g., on an SGI, you would use .IR apanel (1); on a Sun you would use .IR gaintool(1) or, when using X, .IR x_gaintool(1) (these programs can be found in /usr/demo/SOUND in SunOS 4.1). .PP Some loss of UDP packets is tolerated; this is heard as short nterruptions of the sound. .SH OPTIONS .TP 10 .BI \-p port Receive packets sent to this UDP port number (default 54321). This corresponds to the port used by .I broadcast. Port numbers 1..99 are shorthands for 54321..54419. .TP 10 .BI \-v volume Set the initial volume, on a scale from 0 to 100. (SGI and Sun Sparc only.) By default, the volume is left unchanged. .TP 10 \fB-f\fR Filter mode: write the U-LAW audio data to stdout instead of sending it to the audio hardware. .TP 10 \fB-n\fR Noninterruptable mode (Sun Sparc only). By default, radio notices when another program wants to output the audio output device, and temporarily ``backs off'' until the other program is finished, hoping it won't take too long. This option turns off that feature. .TP 10 \fB-c \fIport\fR Use this UDP port number as control port (default 54320). Normally you never need to change this; the control port is used by optional ``tuner'' software (not distributed) and possibly by listener poll programs. .TP 10 \fB-s\fR Secure mode: don't listen to the control port. .TP 10 \fB-l \fIaddr\fR Listen only for packets to IP address .I addr (useful for forwarding stations). .TP 10 \fB-r \fIaddr\fR Listen only for packets from IP address .I addr (useful for forwarding stations). .TP 10 \fB-d\fR Turn on debugging (a message on stderr for each 8 packets received, and when rare or unexpected events happen). .SH AUTHOR Guido van Rossum .SH VERSION This manual page documents radio version 1.0, patchlevel 3.
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