Larry,
You hook up the PC to the T4 with the editor tools and away you go you can edit the samples and then save them it's easier than doing it throught the KB, theres a KB on the PC screen you can play the sounds from there.
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Tyros 4/Pair SR 350/ PC with a i8 intel chip, XENYX 802, Ford Focus 2 litre/Tascam DR07/Brother printer/Designjet 500/ our Doris/5 Grandchildren/ white boxers short Kymart shipped over and Typhoo Tea Earl Grey