i have been using what you describe to access my music stored on my NAS but was having issues with using both speakers as a left and right two speaker system. Have software from speaker manufacturer but is not very stable.
I have a set of powered speakers that have wifi, bluetooth and aux inputs. They pair together thru wifi but not wired or bluetooth. They are GGMM M3 speakers rated at 40 watts and i believe 8 ohms. Looking for best dac, amp or AIO to run them. I am looking for a stack but cannot buy them...