This app was mentioned in 5 comments, with an average of 1.60 upvotes
Rocket Player Premium handles flac files. Not sure about the 32 vs. 64 bit question but the dev is super responsive if you e-mail him.
> Textra -Best texting app I've used. I'm on T-Mobile, so SMS splits suck. There are lots of changes I can apply to resolve SMS issues, change theme (NIGHT MODE!@), notifications, all without root.
Textra rocks.
Some of my favorites:
I use Rocket Player.