Google Play Music (save to external SD card guide)
Google Play Music (Version 4.4.811H.526848)
required app: ROM Toolbox
Open Settings > Application manager > All > Google Play Music
Select "Force stop" and "Clear data"
Open ROM Toolbox > Root Browser
Create the following folder on your SD card /mnt/extSdCard/GoogleMusic/files
Tap and hold the folder named "files"
until menu appears, and select "Create shortcut" at the bottom of the list
Navigate to /data/data/com.google.android.music/
Select "Create" and the "files"
folder should be linked
Open "Play Music" app and sync
Select "Choose on device music" and it should show the available space on your sd card
the directory where music is stored has changed from /data/data/com.google.android.music/cache
for both music and artwork, so create a symlink from your external sdcard in that location.