You didn't hear this from me but...
I was once asked about my bootleg collection. Remember (or not) when I said some are on YouTube? There's a page uploading some audios from my favorite Purple Rush so if you go on there right now, you'll see some new ones. The Purple Rush 4: The Final Seduction rehearsal version of them doing Bedtime Story by Sheila is everything. Prince really gave her the best songs but I won't start that rant. Anyway, it seems to be a wide selection there and I'm positive they won't be there long so if you're looking to download from YouTube, I'd hop to it while these options are still freely available.