The Sample rate functions allow you to: perform the sample rate conversion (Resample), change the speed with which a soundfile is played back (Change sampling rate), correct the RPM rate if an old recording is played back with a nonstandard speed or using a nonstandard equipment (Adjust RPM rate), trim the length of a soundfile (Trim length) and - convert any audio file to a format that allows one to record it on a CD (CD format).
Since the audio card settings, such as the sampling frequency or the number of channels, cannot be changed ‘on-the-fly’, i.e. during the playback, utilities belonging to the Sample rate group will not allow you to switch directly between the Play source and Play result buttons when tested in the on-line mode - you have to stop playback before pressing the other button. For the same reason some options in the corresponding dialogs are disabled when the Play result button is pressed.