for adjusting BPM of loops and samples, load them into the playlist as an audio clip, open the channel settings dialog and look for the time stretching box, just under declicking. There are a few options here to work with, the first being the drop down box. It tells FL what kind of sample you are stretching (beats-transient, vox, or instrumentals-tonal), once you choose that, you can use the time and pitch options to stretch. It helps to keep the playlist view open with the sample inserted so you can use the grid system to set the proper bpm. Hope that helps.