I am in the process of a fairly major redo on the settings.  I am working on issues 100 through 103, and 32.  I just posted 2.8.0 beta on the downloads page.  It is ready for basic testing.  It still lacks some translations, the old settings still show up in the preferences (but no longer work), and I have a few other issues to work through but the basic functionality works.  I have moved many settings from the preferences (global) to instead be configurable per device.  I also changed several settings from radio selection to slider bars to get more tunable control to the user.  Since there are now so many settings, I changed the function of the back key to now save and exit instead of cancel and exit.  I added a new cancel button at the bottom of the settings.

Here is a preview of the device edit screens:

We just finished implementing the power connected as a device (issue 97) and the GPS auto-enable feature (issue 95).  We now have 5,755 active installs and 32,930 total downloads.  The chart below shows the language distribution based on the language selected in the device.  A2DP Volume only supports English, French, and German currently.