A full video of the Sukhmani Sahib can be found at raagionline.com. There are also several mirrors that host the Sukhmani Sahib, such as Gurbani.co.
The Sukhmani Sahib is a prayer that is recited through the course of a song. Each song takes approximately 90 minutes to complete and is separated into several sections. The main build of the song is separated into 24 staves and 24 cantos, which are separated into eight stanzas of 10 lines. These prayers are said to help heal the spirits and minds of those who listen to it, and is recommended to be recited at least once a day.