Return: AA 0D 02 upper-byte lower-byte SM

The Directory of the previous folder(0E)

Command: AA 0E 00 B8

Return: None

Explanation: The first audio in the folder will be played after switching.

The directory of the next folder(0F)

Command: AA 0F 00 B9

Return: None

Explanation: The first audio in the folder will be played after switching.

End to play(10)

Command: AA 10 00 BA

Explanation: This command can end the current operations in advance. If the command end a cut-in,

it will end in advance and return to the original status.

Check the first audio in the folder(11)

Command: AA 11 00 BB

Return: AA 11 02 Upper-byte Lower-byte SM

Explanation: It is the sequence number of the first audio.

Check the total numbers of audio in all folders(12)

Command: AA 12 00 BB

Return: AA 12 02 Upper-byte Lower-byte SM

Explanation: This number does not contain the number of files in subdirectories.

Volume settings(13)

Command: AA 13 01 VOL SM

Return: None

Explanation: AA 13 01 14 D2 Set volume to level 20.