Click here to download a project file for Apple's Logic that contains some good MPE sounds, including some good sampled sounds.
Click here to download the same sounds for Apple's MainStage.
For both, set your LinnStrument to send MPE: In Per-Split Settings, MIDI Mode column, HOLD the "ChPerNote" button for 1 second. It will change to light blue, indicating all relevant MIDI are set for MPE play.
For more details about using LinnStrument with Logic or MainStage, see the Recommended Sounds page, then scroll down to the "Apple" list item in the list of MPE-compatible synths.
