When you overwrite or erase audio data by overdubbing, punch in/out recording or track editing, this audio data will not actually be deleted from the BR-900CD’s compact flash card memory. This data remains in the card so that you may use the UNDO/REDO function. In certain cases, the amount of memory space used to store this unneeded audio data may become quite large, and you will not be able to record as much new audio data as you would expect. Use the Song Optimize function to increase the amount of free space on the BR-900CD’s memory card by permanently erasing this type of unneeded data.
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Press [UTILITY].
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Move the cursor to “SEL” and press [ENTER/YES].
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Use the TIME/VALUE dial to select the song you would like to optimize and the press [ENTER/YES].
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Press [UTILITY].
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Move the cursor to “EDT” and press [ENTER/YES].
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Move the cursor to “OPT” and press [ENTER/YES].
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Press [ENTER/YES] to optimize the song.