|The TIMELINE feature allows you to view your photos chronologically, in a slideshow.|
Each album folder can be selected, and you can use the slider on the bottom to move from oldest to newest Album folders.
The SLIDESHOW feature allows you to view a particular album and its contents. The viewtime for each photo can be set from 1 second to 20 seconds.
Since Picasa is a multimedia viewer, you can play your favorite music when viewing a slideshow. Just tell Picasa where to locate the MP3 files on your computer...