[LAU] Best and cabable music player?

[Juhana Sadeharju]

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