Today (according to the last post) I've decided to use something other than bmpx. For some hours I've used xmms, but it sucks. No support of gnome. I remembered, that I'd read about some server/daemon music player on Jan Kasprzak's blog long long time ago. But what was the player's name? I had no clue.
I tried to go through his blog again with nothing in return. Suddenly, the idea came. Use google, dude! Yup, it gave me a good result of that what I wanted (using "site:" notation). Music Player Daemon. I grabbed a last version and made rpm packages with some .spec parts from livna orginal srpms.
Now I use it and I'm totally happy. It sits on tcp port 6600 and the protocol is text-based. Everybody might write his own client – there are many clients to choose from. I personally use mpc in text mode (and for key-bindings) and gmpc in gnome graphics. I'm going to write dbus client, but I have to wait for listen interface, that would be implemented shortly.