Convert a regular autocomplete field into an autocomplete deluxe field?
As per the README.txt file, something like this should work


   $form['field_term_ref_tid'] = array(
     '#type' =&gt; 'autocomplete_deluxe',
     '#autocomplete_deluxe_path' =&gt; url(
       'autocomplete_deluxe/taxonomy/field_term_ref',
       array('absolute' =&gt; TRUE)
     ),
     '#multiple' =&gt; TRUE,
     '#autocomplete_min_length' =&gt; 0,
     '#autocomplete_multiple_delimiter' =&gt; ',',
     '#not_found_message' =&gt; "The term '@term' will be added.",
   );