Remove space in my video embed URL

I am embedding a flv file, with permission, from another website. The URL has spaces in it, and the owner doesn't want to change it because other people are also linking to it and.or embedding it.

I have tried replacing the space with %20 also +, but nothing seems to work. Here is my code:

<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="320" height="240" id="FLVPlayer1">
      <param name="movie" value="FLVPlayer_Progressive.swf" />
      <param name="salign" value="lt" />
      <param name="quality" value="high" />
      <param name="scale" value="noscale" />
      <param name="FlashVars" value="&MM_ComponentVersion=1&skinName=Clear_Skin_2&streamName=http://www.samplesiteaddress.com/video320x240.mov with audio&autoPlay=true&autoRewind=false" />
      <embed src="FLVPlayer_Progressive.swf" flashvars="&MM_ComponentVersion=1&skinName=Clear_Skin_2&streamName=http://www.samplesiteaddress.com/video320x240.mov with audio&autoPlay=true&autoRewind=false" quality="high" scale="noscale" width="320" height="240" name="FLVPlayer1" salign="LT" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />    
</object>

Code (markup):

Thank you in advance.