Playback is excellent! I almost never experience annoying hiccups, even if I put the player in the background and continue with e.g. browsing the Internet.
The new playlist based GUI takes some getting used to but I like it already.
In the kagu-scanner.py source file I had to increas the maximum search depth from 6 to 100 to make it find all my media files (have a deeply nested directory structure). Any reason for the limitation to such a shallow depth (6)?
This player is a very interesting emerging player but to place it ahead of such greats as Canola, it'd be nice to have two features: bookmarking (resume) within songs, and seeking. I use it primarily for podcasts and it's frustrating not being able to seek (or pick up at the last point) in a podcast.