To download a file, just click on the link with the right button of your mouse and choose 'Save target as...' (If you have a Mac, press the CTRL key on your keyboard and then click on the link with your mouse).
The files in the first column are PDF files which contain the texts of the meditations; you can read them with Acrobat Reader of Adobe that can be downloaded for free on the website of Adobe (www.adobe.com).
The files in the second column are MP3 audio files; with each file you can listen to the entire prayer of the Rosary.
Finally, the RAR files of the third column are compressed files; each one of them is a folder which contains the five decades of a Rosary separately. To extract the MP3 files you will need a software such as WINRAR for Windows or STUFFIT for Mac (these software are free on the Internet).