Here you can enable minidlna, an internal media server that lets you share media content. For example, you can share media files from USB storage connected to the router towards DLNA clients.

Start Now/Stop Now: Clicking this starts/stops the minidlna server, whatever is the opposite of its current state.

Open status page in new tab: In a new browser tab, displays media file sharing status.

Enable on Start: Enable/Disable the DLNA service at boot time.

LAN0 - LAN3: Bridges checked here will have the minidlna service advertised on that bridge.

Port: The port where the service is reachable. Minidlna publishes it in its active network advertisements.

Database Location: Specifies where, on local media, to store the database. This is built automatically after a scan.

Rescan on the next run: Media are scanned periodically, but you can force a scan by selecting this option/save.

TiVo Support: Adhere to the TiVo standards in case you use a TiVo client.

Strictly adhere to DLNA standards: Enabling this may increase compatibility with old client devices that have issues.

Media Directories: Define where the actual media is. To exclude a subdirectory from scans, place an empty file with name:
.minidlnaignore in the filesystem.

For example:

cd /mnt/usb/media/private
touch .minidlnaignore