# YZ Music Player **URL:** \ **Category:** Android Apps\ **Tags:** waze, zemer, filter, release, app\ **Created:** [October 9, 2026, 12:42am UTC](https://jtechforums.org/t/yz-music-player/10315 "2026-10-09T00:42:05Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![the\_C.S](https://jtechforums.org/user_avatar/jtechforums.org/the_c.s/32/15671_2.png) [@the\_C.S](https://jtechforums.org/u/the_C.S)\ **Post date:** [October 9, 2026, 12:42am UTC](https://jtechforums.org/t/yz-music-player/10315/1 "2026-10-09T00:42:05Z")
**YZ Music Player: turning a spare or inexpensive Android phone into a dedicated kosher MP3 player** I’m building **YZ Music to help people reuse an Android phone they already have at home—or an inexpensive Android phone—as a dedicated kosher music player**. A special thank-you to @ars18 for all the help and support! The idea is to give the device a simple music-focused home screen, with Zemer for online music, Pulsar for local music files, and shortcuts such as Bluetooth and optional Waze. There are normal and car layouts too. The goal is to make a spare phone useful as an MP3 player instead of buying a separate device. I’m also working on a browser-based WebADB setup flow for the initial installation. For future YZ Music updates, I’d like users to update directly from the app, without reconnecting the phone to a computer each time. For an APK distributed outside Google Play, what’s the safest and most reliable update approach? I’m considering checking for a signed release, downloading it, and handing the installation over to Android. I’d especially appreciate advice about: - How to verify that an update comes from the same developer - What installation prompts users should expect - Any issues with Device Owner or managed-device setups - Whether the updater should be part of the launcher or a separate helper Compatibility will depend on the Android device, so I’d also welcome feedback from anyone who has tried repurposing an older or low-cost phone this way. Please feel free to let me know if you see anything that could be improved. Setup page: [WebADB](https://qinfrance.github.io/YZ-MDM/) > **[YiDream · Installer](https://qinfrance.github.io/YZ-MDM/)** Shkoyech !!! ---
**Author:** ![Teq\_uk](https://jtechforums.org/user_avatar/jtechforums.org/teq_uk/32/10809_2.png) [@Teq\_uk](https://jtechforums.org/u/Teq_uk)\ **Post date:** [October 9, 2026, 5:31am UTC](https://jtechforums.org/t/yz-music-player/10315/2 "2026-10-09T05:31:40Z")
Iv been looking for such a thing for android mp3 players for some time now thanks! Why you specifically saying it’s for old phones, it’s just as useful to use the software for any android mp3 you want to lock down! ---
**Author:** ![shlomo1](https://jtechforums.org/letter_avatar_proxy/v4/letter/s/85f322/32.png) [@shlomo1](https://jtechforums.org/u/shlomo1)\ **Post date:** [October 9, 2026, 5:37am UTC](https://jtechforums.org/t/yz-music-player/10315/3 "2026-10-09T05:37:49Z")
you say andorid devices, what devices was this tested on? sounds interesting. ---
**Author:** ![the\_C.S](https://jtechforums.org/user_avatar/jtechforums.org/the_c.s/32/15671_2.png) [@the\_C.S](https://jtechforums.org/u/the_C.S)\ **Post date:** [October 9, 2026, 8:26am UTC](https://jtechforums.org/t/yz-music-player/10315/4 "2026-10-09T08:26:38Z")
**A quick update to my original post:** - **Preview:** Try the YZ Music interface on the website without downloading or installing the app. - **Android support:** Designed for Android 7.0 and newer, including older and inexpensive phones. - **Languages:** English, French, Hebrew and Yiddish. - **Car mode:** Switches on automatically when you turn the phone to landscape. - **Open source:** [View the GitHub repository](https://github.com/QinFrance/YZ-MDM) - **Website and preview:** [Try it here](https://qinfrance.github.io/YZ-MDM/) More updates are coming—stay tuned! ---
**Author:** ![the\_C.S](https://jtechforums.org/user_avatar/jtechforums.org/the_c.s/32/15671_2.png) [@the\_C.S](https://jtechforums.org/u/the_C.S)\ **Post date:** [October 9, 2026, 12:09pm UTC](https://jtechforums.org/t/yz-music-player/10315/5 "2026-10-09T12:09:04Z")
One more update: _ **Waze support** _ - I’ve added Waze as an optional app, so an existing or inexpensive compatible Android device can become a kosher music player with car navigation. - That can save you from spending hundreds on a dedicated device used only for Waze. - No custom ROM is needed. Connect the phone to the WebADB installer, authorize USB debugging, and it checks which apps are already installed. Apps that are already there are kept; for missing apps, the installer guides you through adding them.