HERE Drive+ no sound (voice) in lumia cyan
3 steps to enable the voice in HERE Drive+ on Lumia Cyan (WP8.1)
1. First and most important thing is to have speech enabled in Your system settings.
After selecting Your language make sure that in speech position You have "enabled"
2. If not, navigate to settings/speech, and click "Speech language"...
...and download selected speech package.
3. After that, launch HERE Drive+ and navigate to settings...
...and download the voice (eg. English (US) - recorded voice)
Now You can enjoy Your HERE Drive + :)