si podes correr video o musica en el navegador
solo necesitas en lugar de poner el enlace colocar el codigo apropiado para cada cosa por ejemplo el de video lo podes poner de la sigueinte manera.
<OBJECT id=MediaPlayer
codeBase=http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701
type=application/x-oleobject
height=360
standby="Cargando componentes del Microsoft® Windows® Media Player..."
width=480 classid=CLSID:22D6f312-B0F6-11D0-94AB-0080C74C7E95>
<PARAM NAME="transparentAtStart" VALUE="-1">
<PARAM NAME="AnimationAtStart" VALUE="0">
<PARAM NAME="AutoStart" VALUE="-1">
<PARAM NAME="AutoRewind" VALUE="-1">
<PARAM NAME="DisplaySize" VALUE="2">
<PARAM NAME="AutoSize" VALUE="0">
<PARAM NAME="ShowDisplay" VALUE="0">
<PARAM NAME="ShowStatusBar" VALUE="-1">
<PARAM NAME="ShowControls" VALUE="0">
<PARAM NAME="FileName" VALUE="
mms://200.85.10.136/agapetv8">
<PARAM NAME="Volume" VALUE="0">
<PARAM NAME="AudioStream" VALUE="-1">
<PARAM NAME="AllowScan" VALUE="-1">
<PARAM NAME="AllowChangeDisplaySize" VALUE="-1">
<PARAM NAME="Balance" VALUE="0">
<PARAM NAME="BaseURL" VALUE="">
<PARAM NAME="BufferingTime" VALUE="5">
<PARAM NAME="CaptioningID" VALUE="">
<PARAM NAME="ClickToPlay" VALUE="-1">
<PARAM NAME="CursorType" VALUE="0">
<PARAM NAME="CurrentPosition" VALUE="-1">
<PARAM NAME="CurrentMarker" VALUE="0">
<PARAM NAME="DefaultFrame" VALUE="">
<PARAM NAME="DisplayBackColor" VALUE="0">
<PARAM NAME="DisplayForeColor" VALUE="16777215">
<PARAM NAME="DisplayMode" VALUE="0">
<PARAM NAME="Enabled" VALUE="-1">
<PARAM NAME="EnableContextMenu" VALUE="-1">
<PARAM NAME="EnablePositionControls" VALUE="-1">
<PARAM NAME="EnableFullScreenControls" VALUE="0">
<PARAM NAME="EnableTracker" VALUE="-1">
<PARAM NAME="InvokeURLs" VALUE="-1">
<PARAM NAME="Language" VALUE="-1">
<PARAM NAME="Mute" VALUE="0">
<PARAM NAME="PlayCount" VALUE="1">
<PARAM NAME="PreviewMode" VALUE="0">
<PARAM NAME="Rate" VALUE="1">
<PARAM NAME="SAMILang" VALUE="">
<PARAM NAME="SAMIStyle" VALUE="">
<PARAM NAME="SAMIFileName" VALUE="">
<PARAM NAME="SelectionStart" VALUE="-1">
<PARAM NAME="SelectionEnd" VALUE="-1">
<PARAM NAME="SendOpenStateChangeEvents" VALUE="-1">
<PARAM NAME="SendWarningEvents" VALUE="-1">
<PARAM NAME="SendErrorEvents" VALUE="-1">
<PARAM NAME="SendKeyboardEvents" VALUE="0">
<PARAM NAME="SendMouseClickEvents" VALUE="0">
<PARAM NAME="SendMouseMoveEvents" VALUE="0">
<PARAM NAME="SendPlayStateChangeEvents" VALUE="-1">
<PARAM NAME="ShowCaptioning" VALUE="0">
<PARAM NAME="ShowAudioControls" VALUE="-1">
<PARAM NAME="ShowGotoBar" VALUE="0">
<PARAM NAME="ShowPositionControls" VALUE="-1">
<PARAM NAME="ShowTracker" VALUE="-1">
<PARAM NAME="VideoBorderWidth" VALUE="0">
<PARAM NAME="VideoBorderColor" VALUE="0">
<PARAM NAME="VideoBorder3D" VALUE="0">
<PARAM NAME="WindowlessVideo" VALUE="0">
<embed type="application/x-mplayer2"
pluginspage="http://www.microsoft.com/Windows/Downloads/Contents/Products/MediaPlayer/"
name="MediaPlayer"
width=640
height=480
displaysize=200
animationatstart=0
showcontrols=0
filename="
mms://200.85.10.136/agapetv8"
src="mms://200.85.10.136/agapetv8"
showstatusbar=1
autostart=0
autosize=0
transparentatstart=0
transparentatstop=0>
</embed>
</OBJECT>
cambia lo que esta en negria por el video que vos tenes y los anchos que queres darle
saludos