A few things to note.... C format is not supported in this version, and the Pascal format is incomplete...but it works for most versions. Also, nothing has developed yet for Option 3 and Option 4 on the SoundMaster menu. Lastly, there are a few bugs in the extended functions, as this is an alpha version. However, the Open File, New File, Save File, and Edit File works fine, as does Play and Selected Play. Edit has nothing fancy in it...yet. Currently you have to go line by line. When in Edit, 'P' plays through it all, and 'S' is selected play. 'Q' exits edit mode, and enters the menu again. A portion (or the whole composition) may be played in reverse with Selected Play. If you wished to play--say, line 100 through line 25, in that direction, you would enter 100 as the start line, and 25 as the end line. A demonstration file is included with the package. Hope That Helps, The author.