Within a Replicator, you have access to two green variables: ?VoiceNumber and ?NumberVoices. So if you have a Replicator on a SampleBits, you could use ?VoiceNumber as the index into an Array of sample names. For example, in the Sample field of the SampleBits, you could use:
{?VoiceNumber - 1 of: #('funky bass.aif' 'Alien threat.aif' 'Count.aif' 'frase.aif')}
Then each copy created by the Replicator would reference a different samples file.