OreoMuncher45/Auris ? reverse-engineered prompt

Build me an Android music player called Auris that feels modern and polished, with a big now playing screen, artwork based colors, light and dark themes, and smooth navigation that works well with one hand. It should play my local music, connect to YouTube Music, and support optional lossless source add ons, while keeping downloads, lyrics, scrobbling, and Discord presence all in one library.

I want it to feel lossless first, show the actual audio quality correctly, and make downloads smart so they still work offline but use the chosen quality when I am online. Add a few fun listening modes too, like an endless personal mix, a karaoke style sing mode, and a classic iPod looking theme. Make sure the app is clean, ad free, and does not need an account to use. If you need to, look up current Android and Kotlin docs online while building it.