A new version of SCMD, the multichannel PCM and multichip soundplayer for MSX has been released. In this release, a bug that corrupted addressing when using the Y command on a turboR was fixed. The SCMD player allows you to play multiple samples on one or even two SCC cartridges at the same time, which is similar to playing MOD-files. SCMD support also supports 'ordinary' sound playback on PSG, MSX-MUSIC and SCC. Several mp3 files of the results can be heard on this website. A special MML compiler to support this functionality is available on the SCMD website as well.
Relevant link: SCMD website