selected playback

I want to export only selected sections in .wav/.mp3.
Or I want to play back the bars from x to y, may be cyclical.
Is(will) that (be) possible?
Till present I must make derived projects with the only bars which I want to play back.

It is not currently possible, I’m afraid, but I hope we will be able to make this possible in the future with the inclusion of locators for use in playback.

Thanks for the answer which contains a spark of hope. I am glad on it.