Yep, years ago, the first time I needed to select the CONVERT button, I was also unsure what was going to happen after selecting. I was happy to see...
Ahhh... so, I didn't have enough of the context-menu handlers specific to dBpoweramp enabled - and then there is the slight matter of the of slightly...
no it's in windows. After you select some files, right click, select "dbpoweramp BATCH CONVERT", then it will open up a window that looks like below...