dev@155: <div
dev@155:   #track class="track"
dev@155:   (mousedown)="seekStart()"
dev@155:   (mouseup)="seekEnd($event.clientX)"></div>
dev@236: <ng-template [ngIf]="isLoading">
dev@234:   <ugly-progress-spinner></ugly-progress-spinner>
dev@236: </ng-template>