http://www.tapland.com/news_arc/?id=504
Based on the XM format
Up to 24 channels playback
Up to 42 KHz mixing frequency
Mono and stereo output
Optimized for low CPU usage and low memory usage
Dynamic (re)setting of mixing frequency (even during gameplay)
Dynamic (re)setting of number of channels
Songdata compression
Volume and panning envelopes
Seperate master volume support for Music and Sound Effects
Sound FX support based on WAV format
Sound FX features include looping, pitching and panning!
Automatically detects instruments/creates instrument banks
Sophisticated and easy-to-use conversion tool
Allows up to 255 different instruments to be used per songset!
Song fading
Ability to strip down engine when you require extra RAM
Feedback from the engine (get signals from the playing song)