Pony.fm/public/templates/partials/collection-mixed-losslessness-dialog.html

<div class="modal" tabindex="-1" role="dialog">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header" ng-show="title">
                <button type="button" class="close" ng-click="$hide()">&times;</button>
                <h4 class="modal-title">Information</h4>
            </div>
            <div class="modal-body">
                <p>Your download contains some tracks which are in lossy formats instead of your chosen lossless format ({{::format.name}}. This is because they were originally uploaded in a lossy format (e.g., MP3). As a result, these tracks have been replaced by their lossy files.</p>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-flat btn-primary" ng-click="$hide()">OK</button>
            </div>
        </div>
    </div>
</div>