I haven't tried to do this, so I can only suggest things for you to investigate on your own. You could select the loop, open loop construction, and edit the loop's properties to mislead Sonar. If the loop is only 4 bars, edit the properties of the loop so that Sonar thinks that the loop is 8 bars. That might half the speed. You could try selecting the loop and using the time stretch functions. I don't think that you can manually time stretch a clip that is set to be a groove clip, though, so you'll have to use Bounce To Clips to make it a basic audio clip first, then stretch it, then convert it back to a loop with loop construction. You could use AudioSnap. The loop will be a groove clip, so you'll have to Bounce to Clips to turn it in to a basic audio clip. Then, go in to properties for the clip and enable AudioSnap and time stretching. Once you do that, the audio stretching tab in the clip properties will include an edit field for scaling the time of the clip (default is 100%). Change that to 200% (twice as long). You could bounce the clip again and convert it back to a groove clip with loop construction, but you may as well leave it as AudioSnap. AudioSnap can follow project tempo like a groove clip can, but it can't follow pitch/key changes. Bryan On Feb 23, 2012, at 2:46 PM, Rui Vilarinho wrote: Hi guys, I am making a 200 bpm audio project and i want to insert some audio samples like perk etc..., . though it must folow half the refered bpm. As you know the audio samples folow the bpm define by the project. Should exist a place where i could define a particular audio track bpm diferently of the project!though i cant remenber where! I tried the Alt plus the qwerty 2, the loop constructor. though, with nopositive result.I suppose that is because the samples as got more or less 8 bars lenght! anyone? cheers. best regards, Rui Vilarinho