Hi Bob,  I am Giovanni Vitiello from Italy.  Please visit
http://midiboutique.com/  and try "encoder".  If you have a problem
please contact me, I've used an encoder for a similar job.

Best regards,
Giovanni Vitiello
giovanni.celestino@gmail.com.geentroep [delete ".geentroep" to reply]

 [ See, for example,
 [ http://midiboutique.com/products/products.htm#midiencoders 
 [ http://midiboutique.com/products/productform.php?prod_id=12901 
 [ -- Robbie