A new version went out awhile ago that, although it doesn't give you a listview, it no longer puts 50 posters in a row requiring you to scroll left and right to see what your missing before scrolling up and down.
Now you just get the 4 posters on a row and you can just scroll down and see them all. Once you get to the row with the media you want you can then scroll left/right to pick it.
Also we added the balloon popup which will show more of the filename, in case the filename gets truncated in the grid view.
You can look at various options by pressing "*" on the Help poster.
You can also tell it to skip the initial filter screen so you can go direct to the device picking screen.
I know we'd all like to see an optional listview. That is still on the wish list.
You said "athough it doesn't give you a listview, it no longer puts 50 posters in a row" - I just bought an Ultra, came with the JBL headphones. I happen to have one folder on my media server that has 56 subfolders. When I view it with RMP I get one row with 50 and 2 rows of 3 below that.