That's a really old remote, and is poorly suited to adding discretes for new equipment.  UEI remotes are programmable, but the remote already has to have the IR protocol and (usually) the device numbers built in.  That RS remotes, for example, can't be programmed for most Blu-Ray players.  Nor can it do any of the combo protocols.  

Get a RCA RCRP05B.  It's less than $20.  Or, if you really want to go cheap, buy a Comcast (red OK/Select button) or Atlas (but don't get a 1056-B03) cable remote.  The Comcast is usually available to $6 or so on eBay.  The RCRP05B has more protocols and device numbers.