There's a rumbling sound underneath everything

[Musicrafter]

I have a particular file I'm working with, and it starts out fine but after a couple of playbacks, Finale starts adding in this weird rumbling sound underneath everything. It only plays when I'm using the playback menu, not space-click. And it only plays when I'm using VST and only when I do Garritan, not with SmartMusic or MIDI. It sounds almost like some kind of engine running, and it's somewhat quiet, but it just keeps persisting until I stop playback, then it goes away. The music on top plays just fine, too -- it's just that this noise gets added. It's really strange -- what might be going wrong?

[motet]

Samples were recorded in Carnegie Hall?

(Sorry--no idea.)

[miker]

The Car Guys would say, "turn up your radio until the sound goes away."

[gogreen]

Could the problem be caused by a percussion sound assigned in error? You could identify the staff that's producing the sound by muting everything and isolating each staff, one at a time, for playback. Alternatively, have you tried erasing midi data in the entire document?

[dcoll]

Same problem, except it happens just in this one file, and all the time.

[heinzfan]

I've had that occasionally happen, but generally it will occur when I start playback on a measure other than the first. I suspect it's caused by a keyswitch triggering a bass instrument. By selectively muting the instruments I've isolated it - usually a double bass or low brass is the culprit. I use Vienna instruments and rarely use Garritan, so it's interesting that the problem also occurs with that sound set.