These formats were never made available outside "the industry". I've seen almost no artist (outside of Bandcamp which does it by default/for free) providing lossless downloads, let alone HQ tracks or 3+ channel tracks on normal albums. Reznor is the only one who comes to mind (he released multitracks and 24b/96KHz of Ghosts I-IV in the Deluxe editions)
(Oh, and Reznor's released other lossless albums too -- The Slip [24/96] and the NINJA 2009 Tour Sampler.)
tape->phono->cd-!->mp3 (originally not well received)
\-> mp3 if called iPod
But to answer your question, I never used Napster (but I know it was popular).