Ÿ   Our HIFI WALKER H2 does support *.m3u and *.m3u8 playlist files. A player software foobar(http://www.foobar2000.org/) will help you to make those playlist files.

Ÿ   Only *.m3u/*.m3u8 file needs to be at the root folder of the SD card. The folder contains your target music doesn't have to be at the root folder.

Ÿ   http://www.wikihow.com/Copy-CD-to-MP3

Ÿ   Make sure to choose WAV (lossless format) instead of MP3 format.

Ÿ   I would plug the new card into a computer to make sure it was formatted, if not, format the new SD card. Then plug it into the HIFI Walker, and down load your music. You could also plug the SD card into your computer, load the music onto the SD card, then put the card into the HIFI Walker.

Ÿ   I upgraded to a 256 gb card and just dragged my music onto it and it kept all the same folder structures and worked after popping it in.

Ÿ   Yes, it will play the entire collection of songs in random. Set the player in random mode then select "songs" rather than albums or artists or genres, etc.

Ÿ   The player itself doesn't have noise cancelling feature but the earphone included supports passive noise cancelling. The player does not support any album art.

Ÿ   If your headphones are Bluetooth and have volume, then yes.