I have to add this php function:

<?php _e("[:en]Read more[:cy]Darllen Mwy"); ?>

for this string:

$more = '<span class="excerpt-read-more"><a class="more-link" href="' . get_permalink() . '" title="' . the_title_attribute( 'echo=0' ) . '"><br />Read More &raquo;</a></span>';

The very best php function about should replace the "Find Out More »" little bit of the underside string.

I am rubbish at php and getting syntax errors or free whatsoever.

I honestly have no clue if this sounds like even what you're asking, but:

$more = '<span class="excerpt-read-more"><a class="more-link" href="' . get_permalink() . '" title="' . the_title_attribute( 'echo=0' ) . '"><br />' . _e("[:en]Read more[:cy]Darllen Mqy") . ' &raquo;</a></span>';

Appears to become what you would like..

I believe you would like this:

$more = '<span class="excerpt-read-more"><a class="more-link" href="'
        . get_permalink()
        . '" title="'
        . the_title_attribute( 'echo=0' )
        . '"><br />'
        . _e("[:en]Read more[:cy]Darllen Mwy")
        . ' &raquo;</a></span>';

But to tell the truth, your real question is not so obvious about what you would like, to ensure that might not provide you with the result you are after...