Need an MP3 player with specific features.

(HTC Desire)

I've tried a number of players (built in, tunewiki, btunes, meridian, mixzing etc) and they all have good features but I can't find anything with all the features I want, any recommendations based on features below..?

Proper lock screen integration (like HTC player, not like btunes that sits on top)
Smooth coverflow style flicking of playing tracks (htc not bad, btunes bad)
Decent refresh without turning off phone (I update music via wifi and nothing so far handles refreshes well, even with a task kill)
Reads non standard genres (99% of my genres are custom and aren't read)
Support for png folder art
2x4 or 4x4 widget with folder/embedded art display

 

Cheers, I've got ReLoadSD and that works great, suspect it does the same as the one you've suggested.
Just a shame I can't find a music player to do a proper refresh as well. I think it's bTunes took ages to purge stuff that was gone as well so kept trying to play non existent tracks.

And thinking of that, I'd also like built in sleep function. Again, I'm using another app for that so annoying that what I'd consider core functionality in a media player has to be handled outside the app.