[LAU] Best and cabable music player?

Aqualung is ok, but cannot import music folder, songs cannot be muted (only deleted), only one song can be moved at a time. Rhythmbox can import folder, but songs cannot be moved, songs cannot be muted, has no stop button. What player can import folder, expand/shrink subfolders (artists/albums), mute songs, move songs/albums/artists, play mp3/ogg/flac/wav? Advanced: if the whole cassette has been recorded to one flac file, what player can mark songs in the flac file (which should stay unaltered)? Advanced: edit decision list if cassette has announcer voice or other interrupts of radio broadcasting. Also, per song/album volume control via software volume gain (+- gain, not only - as in many software). Display of max sample value after applying gain, or clipping warning of some sort. Juhana