player names only updated when calling mixerRenderer.buildMeshes()

[stephanschulz]

I often load new files in to an already existing maxtrixMixer. The displayed name of the player does not get updated.
For now I always call mixerRenderer.buildMeshes(); after load.

                players[temp_idx]->load(secondOldestFilePath);
                players[temp_idx]->setLoop(true); 
                players[temp_idx]->play();
                mixerRenderer.buildMeshes();