Real Sample clips are hard to find. Most are streaming clips.
You can find the various Real elements here.
Make sure <param name="console" value="MyReal"> is unique. If not, then players with the same value will interfere with each other.

Update 4 September 2009: On a Mac with OS X Snow Leopard & Safari 4.0 Real only plays when Safari is in 32-bit mode. Select Safari and do Command-I to change it.

Convert Real audio and video into MP3 and AVI files (pdf)
Download Real Player
Download this Real Media sample page
Real Alternative (for Windows)

<!-- for each part of the Real player a separate object should be made -->
<!-- http://smilparse.real.com/showcase/resources/samples/embed/plugin2.htm -->

<object id="RVOCX1" classid="clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA" width="400" height="320">

<param name="src" value="../porsche_gt3.rm" />
<param name="autoplay" value="true" />
<param name="loop" value="false" />
<param name="controls" value="ImageWindow" />
<param name="console" value="PorscheGT3" /> <!-- must have a unique value -->
<param name="kioskmode" value="false" />
<param name="cache" value="true" />
<param name="scale" value="tofit" />

	<object id="RVOCX2" type="video/vnd.rn-realvideo" data="../porsche_gt3.rm" width="400" height="320">

		<param name="autoplay" value="true" />
		<param name="loop" value="false" />
		<param name="controls" value="ImageWindow" />
		<param name="console" value="PorscheGT3" /> <!-- must have a unique value -->
		<param name="kioskmode" value="false" />
		<param name="cache" value="true" />
		<param name="scale" value="tofit" />

		<embed src="../_Movies/porsche_gt3.rm" width="400" height="320" nojava="true"
			controls="ImageWindow" console="PorscheGT3" autostart="true"></embed>

	</object>

</object>

<object id="RVOCX3" classid="clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA" width="400" height="36">

	<param name="controls" value="ControlPanel" />
	<param name="console" value="PorscheGT3" /> <!-- must have a unique value -->

	<!-- Note: Object should have data otherwise the controller will not display with Firefox/Camino -->
	
	<object id="RVOCX4" type="video/vnd.rn-realvideo" data="../porsche_gt3.rm" width="400" height="36"
				style="margin-top: -4px"> <!-- margin to compensate Firefox/Camino -->

		<param name="controls" value="ControlPanel" />
		<param name="console" value="PorscheGT3" /> <!-- must have a unique value -->

		<embed src="../_Movies/porsche_gt3.rm" width="400" height="36" nojava="true"
			controls="ControlPanel" console="PorscheGT3" autostart="true"></embed>


	</object>

</object>