I liked qtfm, too. Specially the fact that I could hide/unhide files with one click. Unfortunately qtfm has problemes to play *.mp4 with smplayer (no problem with vlc or smplayer with other FM).
beesoft's bsc has a one click hide/unhide filter, too, and plays videos within a fraction of a second. Therefor I consider bsc a nice replacement of qtfm (although not running rqt but fluxbox).