Do you want to do write music, or do you just want to rip CD's?
If you want to write music, you can go out and buy a copy of Computer Music. It's a british music magazine that comes with a whole suite of free full featured music making programs. Sequencer, sampler, synth, drum machine, FX. It's a good deal considering you'll probably pay 15.00 for the mag.
If you want to rip CD's and convert them to MP3's try these two linkshttp://www.hitsquad.com/smm/win95/CD_RIPPERS/