That being said, here are some general suggestions, not specifically tailored to Letasoft Sound Booster but which might help in finding a solution:
Entirely open-source, safe, and free from any form of malware or restrictions. 3. Windows Loudness Equalization letasoft sound booster trial extension work
: If you're finding it hard to get an extension, it might be worth looking into similar software that either offers free versions, more generous trial periods, or lower-cost options. That being said, here are some general suggestions,