The API remains a flat C-style DLL export, making it trivial to call from C, C++, Delphi, C#, VB.NET, Python, or even PureBasic.
is perhaps the most elegant part of the API. You can attach a callback to fire at specific byte positions, times, or metadata changes. bass.dll v2.4
Released: Mid-2000s (Iterative updates through 2020s) Developer: Ian Luck (Un4seen Developments) License: Shareware (Free for non-commercial, paid for commercial distribution) The API remains a flat C-style DLL export,
// Sync when a song ends BASS_ChannelSetSync(stream, BASS_SYNC_END, 0, MyEndSyncProc, 0); // Sync at 30 seconds exactly BASS_ChannelSetSync(stream, BASS_SYNC_POS, BASS_ChannelSeconds2Bytes(stream, 30.0), MyTimeSyncProc, 0); a radio bot
If you are building a karaoke app, a radio bot, a music visualizer, or simply need to play a sound effect in a game without pulling in a 50MB framework, BASS v2.4 is still the right tool for the job. It is the audio equivalent of a Leatherman tool: small, reliable, and once you learn its 20 core functions, you'll wonder how you ever lived without it. BASS v2.4.16 (latest in the 2.4 series) continues to receive security and compatibility updates as of 2025, proving that sometimes, "old" just means "stable."