MusicMaker Jam probably has a Help file in which you could look up the term Soundpools.

Here is what it says in the MusicMaker help file:

Multimedia Library  - Soundpool

"The included multimedia library provides audio and video building blocks ("samples") that can be combined in the arranger. The samples are categorized according to styles, instrument category, and pitch. In short: just about anything can be combinedwith anything else. The pitches match one another and the various styles of samples are adapted to the tempo. The sky's the limit to your creativity. Music Maker also comes with a range of audio and video effect templates, titles, and graphic animationsfor video clips."

The samples are also known as loops. A Soundpool is a collection of loops.

Here is a tutorial under the Tutorials tab of this forum with a listing or reference guide of Soundpools 9-21.