[Mike Harrison]

Any remote sender ought to work with the Samsung - I don't know how well the DigiEye works with RC5 codes. There have been reports of poor performance of the Samsung with the RC5 qwerty keyboard, so maybe it's remote receiver is a bit fussy - most senders degrade the signal to some extent.
It may be worth trying repositioning the Digieye's IR emitter (nearer or further away - too strong can sometimes cause problems).