I would suggest Tinycore 2.1 with Xfbdev.tce, Opera.tcz, flash10.tcz, XFW.tcz, and XFE.tcz.
That'll give you a web browser with flash10, good sound(loud), a file manager
and a text editor.
you gotta use Xfbdev for frame buffer(vga=788, vga=791, etc)
Here's some pics of mine; also with gimp2, on my 160mb toshiba 7000CT
I custom made the themes for JWM
all that is about 60MB!!!
Leaving you with 3.8+GB hd room
(
http://multidistro.com/tinycore-shots/tc-scrnshots.html )
with opera open, it goes to about 16-20% ram