Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

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Mazda 6 Service Manual: Fuse Panel Description
Fuse block (Engine compartment)           *Some models. Fuse block (Left side)         *Some models. ...

Mazda 6 Service Manual: Operating Tips for MP3
MP3 stands for MPEG Audio Layer 3, which is standardized voice compression established by the ISO*1 working group (MPEG). Use of MP3 allows for audio data to be compressed to approximately a tenth of the source data size. This unit plays files with the extension (.mp3) as MP3 files. *1 Intern ...