^ MusicNet on AOL It may be simple to use, but it was missing 11 of last week’s top-20-selling albums.

^ Listen.com Best options for CD burns. Eight of last week’s top 20 weren’t available.

^ PressPlay The closest thing to Napster, only legal, with support for portables. Also missing eight of the top 20 CDs.

ILLEGAL

Kazaa Browserlike interface is a snap. But you’ll have to wade though a ton of phony files to find the songs you want. Lots of movie files, though.

^ WinMX Not for beginners, but experienced users will appreciate the lack of fake files.

^ Grokster This quick service lets you preview files before you download them.