Beat Replacer is a free VST plug-in designed to "translate" any source track's beat into a custom MIDI note or a drum sound via an integrated SF2 compatible synth. It can use any MIDI port on your system as a destination too.

Similar to Drumagog's philosophy, it's not really intended to replace mixed drum kit performances, you need a multitrack independent drum recording to use, for example, a snare or bassdrum isolated track as a trigger sound to "on the fly" get another clean and already mastered percussion sound or sample.