Issues with Multiple values

I'm trying to create a content type that contains a list of videos. I created a field and checked the "Multiple values" option. I got some problems with that. After creating a node:

1. The videos (or previews or thumbnails) do *not* show on the node.

2. Every time I edit the node the number of fields to define videos gets larger and larger, say I edit the node 10 times then the list shows 30 fields to define videos.

Are multivalued fields supported by this module?

Thanks