I can not get AE to go beyond 4 sec. I can scrub all the way through, but if I hit the space bar, 4 seconds is all i get, what am i doing wrong?
The length of the preview depends on the available resources, your version of AE and can be controlled by the work area. The most optimal settings for the composition window are usually Zoom Factor to 50% and Resolution to Auto. Then, depending on your version and AE and your system resources you run a preview. It's important to know and remember that AE is not a video editing app designed for real time playback, it's an app designed to composite elements together and create shots or at best short sequences.
If you are very new to AE I'd start here: Basic Workflow
Also, the Search Help field at the top right corner of AE will direct you to some great resources. To learn more about previewing type preview or ram preview in the search help field and study up.
Thank you Rick, that solved my problem