Soneone have help before and now i need more to get my remot control to change channel and to change sound on my sansumng tvvcr commbinaton. i have radio shack remote numberr 15 1925 and radio shack 15 2133 but they only change channels and not change sound and can somebodey pleas help me to use the first one or the secon one to change the sound and thank you frenchie.