To access newer features like Dark Mode or native Apple Silicon support, you will need to upgrade to Swinsian 3. Swinsian — The Advanced Mac Music Player Get Swinsian now. Download Free Trial Buy for $34.95. Changelog - Swinsian
If you are specifically using version 2.3.2, it remains a robust local music manager with features like: Swinsian 2.3.2
: Fixes for user-created desktop widget themes and minor UI stability. To access newer features like Dark Mode or
: You can buy a license directly from the official Swinsian website or via the "Purchase" link in the app's menu. Version 2.3.2 Features Swinsian 2.3.2
A "piece" for likely refers to a license key or "piece of software" to activate the application after its 30-day trial . Pricing & Licensing