- if I have a Bluetooth audio device connected, which usually have their own physical play/pause/prev/next controls, those do nothing when Tonido is playing audio. Same BT physical controls work fine in, for example, Google Play Music.
- the notifications area does show Tonido with the name of the current audio file and a progress bar. However, it should also show basic playback controls, like many other audio player apps do.
I think if the Tonido app added support for the Android playback API, all of these problems would go away.