Bring your own .dsf/.minidsf/.ssf/.minissf files by dropping them onto the Sega logos (you'll have to drop the .*lib first - before dropping the song files that use it). Respective files can be found for example on modland.com.
2018 by Juergen Wothke (The source code can be found here.)
Please use the below controls to navigate between the songs that you have dropped on the player: