ant1 posted on a new flashed based mml compiler for the SiOPM. it appears to be a sound librairy for flash/actionscript(?) that contains the following sound features:

• PSG, FM, WaveTable?, PCM and pyhisical modeling sound module emulations
• MML (Music Macro Language) compiler and sequencer
• Sound effectors

He linked:

Try it online here.

Have the swf here.

Manual/reference is in English here, or in Japanese here.

via 8bc.org