Polk Mono UM2 Installation And Operation Manual page 21

UM2
folder sequentially. Press the Intro soft button again to stop Intro Scan and
resume normal playback of the current file.
Repeat Play
Press the Repeat soft button (2) during song play to repeat the current file. Press
the Repeat soft button again to stop repeat play.
Random Play
Press the Random soft button (3) to play all files in the current folder in random,
shuffled order. Press the Random soft button again to stop random play.
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