make page titles shorter for posts

Joe,

This is possible by filtering the title; try adding the following code into a plugin or in the functions.php of your theme:

add_filter( 'aioseop_title', 'joe_aioseop_shorter_title' );

function joe_aioseop_shorter_title( $title ) {
    global $aiosp;
    if ( !empty( $aiosp ) ) {
        $title_length = 50;
        if ( strlen( $title ) > $title_length ) $title = $aiosp->trim_excerpt_without_filters( $title, $title_length ) . '...';
    }
    return $title;
}