Everybody: Please don't buy the app under the assumption that a future update will make it work. If it doesn't work now, it's an issue with your handset's firmware that is almost certainly not fixable from the app's side. This whole program is more of a hack than anything else - the function is clearly not officially supported by Google.
Download the installer of BTmono 1.3.1 for free and take a look at users' reviews on Droid Informer. The app runs on Android devices 2.2 and above. This application is totally secure for downloading. Bedoig is the developer of BTmono which can be found in the Tools category.