In Logic Pro, do one of the following:
To preview audio files (AIFF, WAV, CAF, UBS) before loading, click the Play button. Click the button again to stop playback.
Clicking the Play button loops playback of the currently selected sample file. The sample is played with no manipulation: all filters, EQ, envelopes, and other synthesizer parameters are ignored.
To audition multiple files, click Play once, then step through the files by pressing the Up Arrow and Down Arrow keys or by clicking each filename.
Note: Independent auditioning of all layers is not possible. In multilayer UBS files, the audition function plays the sample at a fixed velocity of 75%. Only the layer addressed by this velocity value is played.
To temporarily replace the sample files of the currently selected drum sound, click the “Preview Sample in Ultrabeat Voice” checkbox.
The drum sound can be triggered as usual (played notes, MIDI PDF
Control Surfaces Support Guide: PDF