Hi, so recently i got my Macintosh to communicate with my good old mac man midi interface. The midi signals I can confirm that they are working, but there is no direct sound playback out of the Macintosh speaker. I know that most people just bought a interface like the Roland sc-7, but I was wondering if possible is there a sound driver for the Macintosh where I can have the sound playback live midi signals out of the internal Macintosh speakers without any sound interface?

