It kind of only makes one style of dungeon (as far as layout) but it's still a good tool, especially if you need to generate something on short notice. When I've used these, I typically ignore most of the notes it puts in and populate it myself for something more coherent.
A cool tip for generating more detailed continents with it is to generate several maps of smaller regions, stitch them together in your Photoshop clone of choice, then import the result back into azgaar's. You can get a much more detailed map that way than you could easily generate otherwise, and as a bonus you can have broad control over the shape of landmass!
For ambience, I really like Michael Ghelfi on YouTube. He does a lot of music now too, but he started with and excels at, imho, a huge variety of ambience tracks.