Hi there @saif1988.
You can absolutely buy soundpacks as you need them. For example if you just want the music for a certain chapter of the campaign you’re playing, you can just buy that pack.
However, if you then want to share those sounds online to your players via the Online Player, you will need a Supersyrin sub and to be honest, it’s the best value for money if you play online often and want access to our entire library of sounds.
BUT if you check out this video, it will show you what’s possible without a subscription. https://youtu.be/jYNOdjdwumo
Syrinscape Online gives you TOTAL freedom to create what you want.
What is it you’re specifically wanting to do? If you tell me what you’re trying to achieve, I can probably help you