DLC files are just Download Link Container files and should be used with JDownloader or CryptLoad. You can Google booth of them and see their sites for download.
In this case with HXEU016R_v1300.dlc it's 5 links/URLs. The visible ZippyShare link in the thread is only 1 of the 5. Keeping 4 as a little bit more secured so they hopefully would be active for a longer period of time.
For DLC files - there's restiction of what file types you can attach to e forum post and one can't attach DLC files directly in a post so they need to be inside a RAR-archive.
- Download the attached RAR-file.
- Open the RAR-file and extract the DLC-file. Use WinRAR, WinZip, 7-zip or similar tool.
- Click on the DLC-file to open the associated application. This should open JDownloader or other associated software if it's not up and running already.
- Select the link(s) you would use for download and start the download process.
Some download tools that support downloads with the help of DLC-files:
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