(FREE!) full-featured multi-track
sound recording/editing/converting:
http://audacity.sourceforge.net/' target='_blank'>Audacity
(I use it on my Windoze, my bro' uses it on his Mac... identical interface, gotta luv it)
Very handy when listening to online radio you want to grab - visually pick where the appropriate sound bite starts/ends

(FREE!)
PDF creation:
http://www.cutepdf.com/Products/CutePDF/writer.asp' target='_blank'>CutePDF Writer
(haven't tried it yet, but sounds like the above is like a printer driver, i.e. works in your word processor, spreadsheet, browser...)
Done - Melbosa