Do not have access to Google Play Store? Download Folder Player Free directly from this site.
!!! If something is wrong and you suspect corrupted data, reinstalling may not work as Android backs up and restores app states every time. Go to your phone settings, Apps, Folder Player, Storage, and tap "Clean Data" !!!
in 2021 Google Play Store declared war on apps with direct access to file systems. Most users are not really affected by this, but this creates ugly problems for some. Please see a dedicated section covering this issue and potential options - Google's war on direct file access
As mentioned in the description, playback for these is supported *ONLY IF* if your device supports them (Folder Player is using your device decoder and does not use its own). For example, unlike MP3, WMA is not officially supported by Android, but some phone manufacturers may add that support to their ppones, in which case FolderPlayer will be able to play them. Here is the list of audio formats officially supported by Android OS.
Your phone is a Unix machine, and it is perfectly capable of mounting external network drives and see files as if the were stored locally. Unfortunately, most mobile operators block your ability to do that, however, if you happen to gain root access, you can search for "cifs" on Google Play and install application that allows this function. If you uncover a better solution please let me know, and I will post it here for others.
Short answer - most likely Android killed the app due to agressive battery settings OR you have some outside interference
Solution 1: In the app menu, check "Battery Use" and add Folder Player in the list of exceptions.
If that does not help:
Solution 2: in your phone settings (search or) go to "Battery and Device Care" - tap on "Battery" - "Background usage limits" - "Never Sleeping Apps" and make sure Folder Player is listed
If you notice that playback does not switch to "next" song, this probably means that service was "killed" by the OS. Also, please do NOT disable notifications. If a media app is running without notifications, Android may kill its service at any time. Do not user battery saving apps and you can also check battery settings of your device manufacturer. Also, some phone models have special "App Blocker" settings to advertise extreme battery saving capability, killing any service that is running for too long. You need to whitelist Folder Player there.
One other thing: Folder Player can pause playback if it receives a request from your phone, such as bluetooth "stop" command, OR some other app (or device), issuing "stop" command to external players. If the app is still active in the notification area but stopped, Bluetooth activity might be the reason
Every music app needs to run a service, otherwise music will not be able to play in the background. If you want to shut down the service, use Menu > Exit in the app. But if you want to save your battery, you don't need to do that as Folder Player does not use your battery if music is not playing. Also, every service like that must be represented as an icon in the notification bar. If you want to hide the icon, go to your phone Settings->Application Manager->"Folder Player" and uncheck "Show Notifications" (BUT see #12 below for side effects)
Permission "read phone status" is (unfortunately) required to pause\restart playback after user picks up or hangs the phone. "Nearby Devices" is needed to auto pause playback on Bluetooth headset (or car) (dis)connection. Please remember that Folder Player does not have "internet" permission, so the app can't transfer anything online.
There is a support for similar functionality through the concept of "Tags". If you navigate to a track, in context menu you can associate song with a particular "tag". These tags are visible from the root, and can be played the same way as folders. Also, app supports m3u playlists which you create manually.
Google established a special process for enabling write access to external drives. It works via showing a very confusing system dialog,
which allows user to grant appropriate write permission to SD Card.
The way it works in Folder Player - when you start app for the first time, you should see a dialog to find your external card to enable write access,
after which you will see these SYSTEM screens (this dialog displayed by Google, not by Folder Player).
If you want to re-run this process, just uninstall and reinstall the app.
If you have Android 11+, this could be little bit more complicated, please read this article.
FolderPlayer does not implement this natively, however you can try this recommendation from Google to enable it. Cast your Android Audio from the Google Home app
FolderPlayer does not process the sound. It is just an interface to find a track to play, waiting for next track to be played by you built-in system player. During playback itself, FolderPlayer does virtually nothing, waiting for internal system Android media player to finish playback. If you hear any anomalies this should be a problem with the file itself, hardware/firmware of your phone, OR third party tools which may interfere with audio stream, such as equalizers.
Uncheck option "Don't keep activities" in the developer options in the phone settings.
If you disabled notification from the app you may not see controls on the lock screen.
Make sure USB stick (or adapter) supports USB OTG specification.
Go to "Menu" > "Battery Use" and add Folder Player in the list of exceptions.
Folder Player does not have functionality to start playback on Bluetooth connect. However some external devices (typically, cars), upon connection send a subsequent "Media Play" command which Folder Player executes. Unfortunately, there is no way to distinguish whether this is automated request by a car, or a manual request by a user.
This happens sometimes for the reasons unknown to me. Try to uninstall and reinstall.
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