N7 music player
It's a free app. No ads but some features are there in Pro only. You can try pro features for free first 30 days.
Listen works great for me, everything in my iTunes library came in exactly and no scanning time is the best
I just use Groove, the new version is great for simple users (like me )
What about airplay music player if you are on wp 8.1
Groove and winamp.
All my songs are there and the playlists from my iTunes library syncs perfectly (which is the best so I can have the same library and playlists across all my devices in different platforms) . None of the other players I tried managed to import playlists. I'm using it from 6 months, so far no problems.
The only drawback is search takes a long time because all my songs are on SD card.
I don't have FLAC, so no idea.
Audiotica is a simple, clean music player. It's not just a music player though; hear a song you like but don't have? You can use Audiotica to look for the song and download it from various sources at the quality you desire possible and tag and art matching courtesy of Last.FM and Spotify all straight from the app. Might not have all the features people look for in a music player but I still recommend it. (Sadly doesn't work properly to download music on Windows 10 Mobile :c It's why I'm on Musicus till I find or someone finds a better app with the same or similar feature set)
Musicus isn't as popular but it also has a distinct, cool UI. Also has a similar music search/download feature with tagging in most cases.
Tag Editor is the best app you can get for editing ID3s and album art, and the changes will show in any music player after the fact. It's very simple and also has Tag Matching from either Xbox Music(Groove) and Last.FM for the more obscure songs or if you don't find a result on Xbox Music somehow.
(EX. You won't find many results for Brian Tyler if you try to use Xbox Music to match tags and art for Shantae and the Pirate's Curse OST )
I bought Extreme Music based on reviews. Got most of the album art, very happy so unpinned Groove tiles with no art from my start screen and replaced with Extreme Music ones, looks great. One problem. ALBUMS PINNED TO START SCREEN DO NOT PLAY. Is there no solution to this problem in Windows 10? Extreme Music is not it!
I got Audiotica for free so you lost me there on the subscription bit.I've tried using Audiotica recently, and as much as I love the features, I'm not willing enough to pay subscription for it (I'm still a student btw, so yeah). But tbh, the app does look cool, and I believe its UI has improved greatly from the time I first tried using it (which was many months ago).
And yeah, I've previously used Tag Editor, but I find it much better and easier to just edit the tags or add the album artwork to my mp3 files through my PC, specifically using a software called Mp3tag.
But that's my problem. Most of the music app that I've used in Windows 10 Mobile doesn't correctly detect the embedded artwork that I've added into my mp3 files, which really frustrates me. Those that do detect it correctly has performance issues like lags, slow launching, etc. So far, only Aki Music performs well for me, but it doesn't have features like FLAC support, gapless playback, Last.FM scrobbling and whatnot, but according to the dev, the features will be coming soon, which is fair as the app was released very recently (it's only a few months old).
Haven't tried Musicus though. Does the app play your local music files, or is it only for streaming music like Spotify or Xbox/Groove Music Pass?
I got Audiotica for free so you lost me there on the subscription bit.
Musicus plays local files yes, whether you can hook onedrive into it is another story