ISOLATE to troubleshoot.

*Start a song playing back and check the blue LED on the SD2, it should be flashing when MIDI activity is received.

*Connect a set of headphones to the SD2's headphone jack while playback is happening and that LED is flashing, if you don't hear anything in the headphones make sure that the Volume slider on the SD2 is turned up all the way to the right.

*Using Line In of any soundcard for playback is good thing, but often one must visit the soundcard's software mixer applet and adjust the Line Input fader and turn muting off in order to hear signals introduced to the Line Input.


--Mac