To convert flac files to wavs we use
dbPowerAmp Music Converter. It is absolutely free, very fast and reliable, and very well written. (The latest version even makes full use of multiple CPUs if you have them!)
Torrents are a way of obtaining data, not the data files themselves. The
Avant-Garde site directs one to the Mininova site (among others), and there one sees for each collection in which one might be interested "Download this Torrent" (or even just a little green arrow). So one's first step is to click on that and download a little "key file" with a ".torrent" extension. This file is just a pointer; it does not contain the flacs you want.
Then - secondly - one runs a torrent programme (a "client" as it is called) such as "microtorrent" (
utorrent with an upsilon actually), and tells that torrent programme where one's little .torrent file is. Specifically, one clicks on "Add Torrent" and gives it the name of the little .torrent file on your hard disc.
The torrent programme utorrent (or whatever) will then proceed to download for one one's actual data file (the flacs in your case). The process usually takes an hour or two, and at the end of it the flacs will be on one's hard disc in the directory in which one told utorrent (in its "preferences") to save them. Sometimes they are compressed into a single .rar or .zip file and one must use "winrar" "winzip" or the like to separate them out.
For much more information about utorrent (the best in our view, and again a free programme) see
here.