Commercial use shall be permitted.
Stardream soundfonts will only use GPL'd (with exception) or Creative Commons Attribution samples. 

Eliminating Roland samples not only allows commercial use, but also increases the realism of the result.

Many Stardream soundfonts are licensed under the GPL version 3 or later, with the special exception, allowing users to license their works that were made with these soundfonts under whatever license they want.

Additionally, some soundfonts are public domain, allowing use for anything users want to do.