#bg-player{
    width: 32px;
    height: 32px;
    position: fixed;
}

#bg-player #play-button{
    width: 32px;
    height: 32px;
    display: block;
    background: url(../images/speaker_32.png) no-repeat;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    -o-border-radius: 5px;
    border-radius: 5px;
}

#bg-player #play-button.muted{
    background-position: 0px -32px;
}