SoundPlayer: Allow volume output of up to 150%

Previously the volume slider could go up to 150% but the real
output volume stayed the same between 100% and 150%.

Userland/Applications/SoundPlayer/Player.cpp

@@ -87,7 +87,7 @@ void Player::set_loop_mode(LoopMode mode)
 
 void Player::set_volume(double volume)
 {
-    m_volume = clamp(volume, 0, 1.0);
+    m_volume = clamp(volume, 0, 1.5);
     m_audio_client_connection.set_self_volume(m_volume);
     volume_changed(m_volume);
 }