Cheap way, but time consuming:
Physically go though each of your programs and combis editing them to the required levels, and then saving the results.
If the Trinity has a compressor / limiter available in it's effect section you could place it on the last bit before it heads out of the outputs. The downside being you may lose one of your effect processors.
Spending money:
Buy your self a compressor / limiter and connect the out of the Trini to the in of the compressor, and the out of your compressor to your sound system.
You'll need to set the compressor so that it only really does something when things are too hot.
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