Hi Hans
As you say this " I also neglected to mention I purchased my B2 with 2TB" we can DEFINITLY confirm that all your music is on the 2TB internal HDD and thus will NOT be affected by you swapping out the SD card.
My only concern is what SD Card did you get, if there is a card sticking out of the right hand side of your B2 you needed the (large format) standard SD Card, if not then you needed the (small format) Micro SD Card version.
Also a Peter recommends, if you have not done so PLEASE, PLEASE make a backup (Export) of your music. Also please not, if you are purchasing a large capacity USB stick to use as a backup device, then get one form a reputable supplier/make
and pay full price. The cheap ones on eBay etc are FAKE! and have lead to terrible problems on this Forum.
Before you use it for you backup, use the tools in the B2's menus to format the device to FAT32 - nothing else will work!.
Finally regarding Pi based music/media centres, Yes I have built quite a few using Pi's,
Some I used
Kodi which actually has a Raspberry Pi foundation image (
LibreElec)
With he Max2Play version builds I installed a
HiFiBerry amplifier "hat" on the Pi and therfore had to search for cases big enough for the Pi, Hat and disks, While the LibreElec builds stream content form my NAS.
Actually there are a tone of maker projects for all sort of things using Pis - its great fun.
Fred