Thanks melonhead for your comments but, really, I haven't done anything for myself. I simply got Xqt and Pocketworkstation and make them work together. To arrange the keyboard is my only contribution and I did it just reading " man xmodmap" once installed Debian.
My answer is due to your comment on XMMS. It runs wonderfully so you must have done, or not done, something...
Remember that the 6000. uses mad for sound. So, you must install a couple of packages: first "xmms" and then "xmms-mad". If doing it is not enough, apt-get upgrade.
The "story" about speed is another one. Taking into account that the 6000 is not exactly a "thunder", I find the speed "reasonable". The big difference that I have found is the time it takes to launch the application: one whole minute for firefox. But once you have it on the screen, it works quite well. I use always swap, as otherwise I have found some troubles, specially instal