Hi Bob,
Just checking that the device can connect as host/client but the problem is that it doesn't change songs?
If so, could you try the following to capture a full bug report:
To figure out why your tablet isn't reacting to the song change command, I need to look at the system diagnostic logs from your device. Android has a hidden feature that creates this report for us without needing a computer.
Please follow these steps on your 8.1.0 Android device:
Step 1: Enable Developer Options
Open the Settings app on your device.
Scroll down and tap System, then tap About phone (or About tablet).
Scroll to the very bottom to find Build number.
Tap Build number 7 times in a row. You will see a small pop-up saying, "You are now a developer!"
Step 2: Trigger the Bug
Open OpenSongApp.
Perform the steps to connect and send the song change command from the other device so the failure happens.
Step 3: Take and Send the Bug Report
Immediately go back to Settings > System > Developer options.
Right near the top, tap Take bug report.
Choose Interactive report and tap Report.
You will see a notification saying "Bug report is being captured..." (this takes 1–2 minutes to finish).
Once it completes, tap the "Bug report captured" notification.
Select Share, choose your email app, and send the file (it will attach as a .zip file) back to me!
Gareth.
PS I would be interested if others are having similar issues to also see any bug reports