UpdatePanel 里面放个button 影响音频播放，请问怎么解决。

<form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <ContentTemplate>
            
            <audio src="/uploads/20120317/201203170411596281.mp3" controls="controls" autoplay="true"></audio>
            <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
        </ContentTemplate>
        </asp:UpdatePanel>
    </form>
怎么一点button 音频就从头插放了？怎么让button不影响播放呢？