Hi,
Yes you are right, you can hide the downloadable product's file name by this CSS rule:
.product-field-type-E h3 {
display:none;
}
Alternatively you can try to delete the "ALT text and Captions" fields of the downloadable product file thruogh "Media Files" section of Virtuemart Backend.
About the module. I don't know what module that is. You need to ask support from the developer of that module.
Our VM Template is ineffective on module stylization. Our VM Template only active in your "VM Category page, VM Product details page, VM Shopping cart page and VM Frontpage page.
Regards.