Modern DAP Interface Development

I need a simple, user-friendly interface programmed for a digital audio player (DAP) running on Android (HiBy R4 DAP). This interface will be used to access a sound art work in a public building. The sound art work comprises 8, 15-minute WAV files. There is a podcast version of the artwork here: https://podcasts.apple.com/de/podcast/silent-parties/id1691841647

Essential Features:
- Play/Pause and Volume Control
- Track Selection and Playlist Management

Visual Style:
- Modern and sleek design

Ideal Skills and Experience:
- Proficiency in Android development
- Experience with audio player interfaces
- Strong UI/UX design skills for modern aesthetics

Please provide samples of similar work done.