Setting Preferences in Second Life
Under the Me tab in the top navigation bar, click Preferences (Ctrl+P).
In the Preferences tab, click Sound and Media.
Turn the Master volume up to the maximum. Buttons, Ambient, Sound Effects, Streaming Music, and Media at 15%. Voice Chat at 50%. Make sure Streaming Music, Media, and Voice Chat are Enabled.
Check Allow Media to auto-play and check Play sounds from gestures.
Under Voice Chat settings, pick Listen from Avatar position. Check Move avatar lips when speaking and Toggle speak on/off when I press Middle Mouse.
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