If exist available player code for these, then I think easy to add these to my player

The source codes of the Soundtrakker player are lost, but I was able to relocate the existing modules and patch the AY-register routines (e.g. for the MSX). Starkos routines http://www.grimware.org/doku.php/documentations/software/starkos/start are available!

The source codes of the Soundtrakker player are lost, but I was able to relocate the existing modules and patch the AY-register routines

This is also enought for me! Can you send the details?

EP plays a sid format, also, but I do not know it's a satandard sid or not,

I don't think it's a fine idea for SymbOS. The "standard" sid format iself needs some degree of emulation of a Commdore machine, the CPU itself and of course the SID chip. So it's not strictly a format with "musical" information only but also the player code itself. I guess the EP "sid player" also has to emulate a 6510 CPU. And - as far as I can imagine - the SID chip emulation itself can be something like the AY emulation, using an interrupt or whatever to rapidly alter the Dave register values eg to emulate the SID's ADSR (Attack-Decay-Sustain-Release, if I remember well enough) possibilities.

Yes, and some SID music reach the speed limit of EP, ex Cybernoid2, sometimes become slow, so it would use too much CPU in Symbos.

Also don't forget, that SymbOS runs several things in "parallel" (from human view point, for real, rapidly changing the execution time slices among them), so it's even not so possible to keep up a quite strict timing/running for longer time than about 1/50 sec. If I am correct ...

Is any test version?

I'm interested too I also checks page http://symbos.de/news.htm quite often in the hope of something new there

Sorry for not uploading another new version. Unfortunately I was busy during the last few days with "normal" life, but this weekend you will get a new update.

hahah! .. yes .. Sounds familiar "normal live" takes always to much time

Where did you steal my source codes? Of course the full listing contains 17 additional lines!

Did my sample of prodatron runtime code stop this thread? Anyway in my magical capacity I predict that there will be an Enterprise Symbos release sometime today!