I don't own an Eos Sampler but I use an ESI-4000 live.

What I do is load all the presets for my whole set into a bank. I currenly have 16meg of RAm Which seems to be more than enough for an hour set. I then assign program changes in each song which correspond to the preset number of the preset(s) I want to use for the song. When I push play i my sequencer the program changes recall the required preset.

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