[Q] Problem with audio streaming

Hello guys,
my team is developing a streaming app. This app is fully working on Galaxy Ace (the target device), but we have problem with other devices.
The problem is the audio, because the only video app works great on other devices.
I want to help my developer, I have a mediacom tablet, and I want to help with debug.
But it seems it's not possible to run a debug configuration with just an apk, I should have the project instead.

There's an easy way to get a log message running the app from the device?
Maybe any hint for the audio streaming?
Sorry for bad english