🎵 Local music library

▶️ Play, pause, next and previous

⏩ Seek/progress control

🔀 Shuffle

🔁 Repeat

❤️ Favorite / liked songs

📋 Create and manage playlists

🎤 Artists

💿 Albums

📂 Folders

🎨 Album artwork

🎧 Mini player

🔔 Music notification controls

🔒 Lock-screen playback controls

📱 Background music playback

🎚️ Equalizer

🔊 Bass Boost

🔊 Virtualizer

📱 Modern Android interface

⚡ Java source code

🛠️ Easy to customize

🚀 Ready to rebrand and develop further

Perfect for: Android developers, app entrepreneurs, students, agencies, and anyone who wants to create a customized music-player application without starting completely from scratch.

6. Features field

You can put:

Music Library

Browse and play songs stored on the device.

Playlists

Create and manage custom playlists.

Favorites

Save your favorite songs for quick access.

Equalizer

Customize the audio experience with Equalizer, Bass Boost and Virtualizer.

Mini Player

Continue controlling music while browsing the application.

Background Playback

Keep music playing while using other applications.

Notifications

Control playback directly from the Android notification.

Lock Screen Controls

Control music without opening the application.

Albums, Artists & Folders

Organize and browse your local music collection.

Fully Customizable

Change the app name, package name, logo, colors, UI and branding to create your own version.

Java Source Code

Get the source code so you can modify and extend the project according to your needs.

Important: I would not put “Niplayer” in the product name. Use Niplayer only as the demo/project name inside screenshots or the video. That way buyers understand they're purchasing a customizable music-player template, not downloading a fixed app called Niplayer.