Soundcrowd

Abstract

1. Introduction

SoundCrowd is a free, open-source and lightweight music player for Android in modern material design, specialized for playing long music tracks (DJ mixes, live sets, audio books).

Want to know the track id of a specific part in a mix? SoundCrowd comes with build-in audio tagging support by using SongRec, an open-source Shazam client implementation, and creates cue points for found track ids. Unlike Shazam, the app records the internal audio of the player, so you don't need to grant access to the microphone or play the music loud!

It features the generation of waveforms that visualize your music tracks during playback and can be used for precise seeking through gestures.

2. Objective

Android music player app with support for waveforms, audio tagging via Shazam, and streaming from SoundCloud, YouTube, Spotify, Beatport, and Tidal

This project demonstrates how Kotlin, Android can be applied to a real-world Mobile App Development problem.

4. Technology Stack

• Glide - BSD, part MIT and Apache 2.0
• AlphabetIndex-Fast-Scroll-RecyclerView - Apache 2.0
• AppIntro - Apache 2.0

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Android Studio (latest)
• JDK 17
• Android device or emulator
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/soundcrowd/soundcrowd.git
cd soundcrowd

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add push notifications with Firebase Cloud Messaging
• Add offline support with local caching
• Publish an internal test build on the Play Store

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which framework is used and why (native vs cross-platform)?
2. How is app state managed across screens?
3. Where is the data stored — locally, Firebase or a REST backend?
4. How are permissions (camera, location, storage) handled?
5. How would you publish this app to the Play Store / App Store?

9. Source Code & License

This project is developed by soundcrowd and published on GitHub under the GNU General Public License v3.0. Please follow the license terms and credit the original author when you use or modify this code.