Get Sailfish OS to read music from micro SD card (Currently does not work):
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*NOTE; this is just for references on how some parts of Sailfish OS work, the final result of getting the music app to recognize my music folder on micro SD fails
(It loses changes upon reboot).


Sailfish wont read music from SD card by default, it is a complicated setup to work.

Part one (set up sd card):
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Sailfish OS cant read most partitions, like exFAT, you will need to make a ext4 partition directly from sailfish os to read/write properly to sd card.
*You will need to have an empty micro SD card, and insert it into the Sony Xperia XA2.

Card operations are done in "Settings > Storage" menu. Tap and hold the memory card item - this makes the pop-up menu appear with appropriate commands in it.
Format the card (ext4 for 64gb+ cards, fat32 for 32gb less cards), DO NOT encrypt the card, and format it.

You will then copy the music folder to micro SD card (came applies to other folders, like Pictures).
You cant move folders to micro SD, you must copy then delete the old folder.


Part two (set sd card as default directory):
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Enable an ssh connection with phone, this can be done in developer settings.

Once logged into ssh, type lsblk, find the folder under drive mmcblk1p1. copy that for future use,
then type: "vi .config/user-dirs.dirs"
In vi (there is no nano in sailfish os), go to XDG_MUSIC_DIR="$HOME/Music" and replace $HOME with the path to your sd card. Type i to allow inserting of text. /run/media/defaultuser/83c8c5ff-e559-4077-b1c2-c31fdca1a563
save by pressing the ESC Key multiple times to make sure you are no longer editing, then type :wq to save and close.

Then now restart your phone.

Sources;
https://www.howtogeek.com/411210/how-to-exit-the-vi-or-vim-editor/
https://jolla.zendesk.com/hc/en-us/articles/201997993
https://together.jolla.com/question/169040/sailfishx-microsd-card-not-detected/
https://together.jolla.com/question/169040/sailfishx-microsd-card-not-detected/
https://together.jolla.com/question/178109/sailfish-x-not-indexing-sdcard-formatted-with-ext4/

Date: October 5th, 2021.