Oh, 1 more thing; RB will want to Merge to a (temp) Wav file first, then convert to the compressed format.

Form your screen shot:
Try clicking OK and let it do its thing.
Once it merges to WAV it asks for the compressed format.

My gripe with this is that it leaves a 0KB size WAV file in the RB folder.
It doesn't take space but messes with the file list.



I do not work here, but the benefits are still awesome
Make your sound your own!