# New Release: 1.7.3
This release adds explicit control over search engine indexing, as well as the ability to specify a custom thumbnail for audio embeds.
# Search Engine Indexing
Within your instance settings, you can now control whether search engines like Google are permitted to index your instance. This will be off by default.
# Audio Thumbnail Support
By default, Elevator shows an audio waveform as a placeholder for audio assets. You can now optionally specify another image in place of the waveform. To enable this, add a "thumbnailTarget" key your upload widget, specifying the field to use for the thumbnail. Generally, you'd add a second upload widget to your template to host the thumbnail, and set it not to display.
To find the field name, use the control-command-h or control-alt-h keyboard combination when editing the template. The "internal title" field is the item you need.