Respuestas:
1 y 2 Tiene q ser con PHP o ASP y una base se datos.
La 3:
Código:
<select id=mp3
style="FONT-WEIGHT: bold; FONT-SIZE: 8pt; COLOR: #00FF00; FONT-FAMILY: Arial; BACKGROUND-COLOR: #0000CC"
onChange=document.all.musica.filename=document.all.mp3.value;
name=Musica classid=clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95 size="20" multiple>
<option selected>---------------- Escoge aqui tu cancion ----------------</option>
<option value="http://MUSICA.mp3"> CANCION1</option>
<option value="http://MUSICA2.mp3"> CANCION2</option>
</select>
<object id=musica height=69 width=278
classid=clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95>
<param name="AutoStart" value="-1">
<param name="AudioStream" value="-1">
<param name="AutoSize" value="0">
<param name="AnimationAtStart" value="-1">
<param name="AllowScan" value="-1">
<param name="AllowChangeDisplaySize" value="-1">
<param name="AutoRewind" value="0">
<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="DisplaySize" 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="Filename" value="">
<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="ShowControls" value="-1">
<param name="ShowAudioControls" value="-1">
<param name="ShowDisplay" value="0">
<param name="ShowPositionControls" 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="ShowGotoBar" value="0">
<param name="ShowStatusBar" value="0">
<param name="ShowTracker" value="-1">
<param name="TransparentAtStart" value="0">
<param name="VideoBorderWidth" value="0">
<param name="VideoBorderColor" value="0">
<param name="VideoBorder3D" value="0">
<param name="Volume" value="0">
<param name="WindowlessVideo" value="0">
</object>