I just affirmed my inner geek and made the jump to Ubuntu linux, and I'm amazingly happy with it (despite 3 hours spent trying to get my wireless card working), except for one thing - media software. I've installed and tried Amarok, BMPx, Rhythmbox, XMMS, and Banshee, and not one of them (although they're all tipped as the "top music apps" for linux) is good enough. On Windows I was using J River Media Player with a DFX plugin, which was amazing because it had both a great library and fantastic quality.
The linux variations have terrible libraries, no album art support in general browsing, very little audio enhancement support, and just generally aren't as functional and/or customisable.
Does anybody know of a program or solution? I'm on the point of taking the jump and going for WINE (an emulator that allows you to run Windows programs on Linux), but it'd be really good to have one already. I can script and skin as much as needed, if I can just get a platform.