Use Puppy Linux. Using SliTaz requires some assembly and will 'tire' you out a lot.
Let me guess - you're trying to run alsaplayer while you have some other application that's taking over ALSA running in the background like Seamonkey on youtube perhaps? Have you tried restarting? If it still doesn't work, then you somehow messed us alsa. I remember one dude that had a similar problem. He was pretty sparse on the details too. Turns out he removed packages to try and make SliTaz smaller with one of them being the alsa packages...
But it's probably you trying to run more than one alsa hogging app at a time. Sometimes closing that program doesn't kill it, so it's still running in the background and keeping other programs from using you're soundcard. There's a way to make it mix the streams, but doesn't work for every program.