I must state that I've never used Linux extensively but as far as I can remember even my Linux user - WIN hater studio buddies use Windows XP or some older MAC system for recording.
Despite its obvious flaws, for a PC base, maybe Windows would be a better choice for an audio workstation. There are lot more powerful recording / sequencer programs than in Linux, not to mention a wider range of audio interfaces.
Considering preamp, yes she will need one. If she is not a tech-kind-of-girl (most probably that is the case), then something like that would be the best for her, for the price of a small mixer:
http://www.m-audio.com/products/en_us/FastTrack.html
With all respect for females and admitting that they are capable of much more things than me and no I'm not a male chauvinist, but behind-the-surface tech stuff might give most of gals a ten-tons headache. Gals just shine elsewhere than males and vice versa. Fact.
There is a little tutorial that I created for news reading / reporter female colleagues some time ago. Even those ones who were bitten by the anti-computer bug, worked pretty fine with this sequence:
- plug in mic cable to interface
- plug in interface to USB
- start program
- read text
- check volume
- adjust volume with big knob
- tiny signal is bad, fat signal is bad, middleways is good
- click record
- read text
- click stop
- save file
For travelling reporters I said to search for places that are not much bigger than their bedroom and there are soft things on the walls, then test with clapping: long sound=bad, short sound=good. Guess what, them gals did some surprisingly nice field voice recordings without having too much headache.
Tested, works
Romeo Knight wrote:By all means forget the SM58 - it's a decent mic but definitely not for recording vocals in a studio, it's just plain wrong here.
Indeed, there are much better voice recording microphones out there, and the Rode NT1 is an immensely better choice for female vox than the SM58. Lots of good suggestions in the full comment.
Anyway, I would not categorically state that SM58 microphones are totally useless in vocal recording applications. Remove steel mesh grille, add external pop-filter: not the best, there are much better dynamic mics out there for vox but still, it works pretty decent for vocals. Okay, it is not the case here but sometimes using high-load dynamic mics is the only way to record certain X >= 110dB screamers and death metal singers. I could save the day with an SM57+pop filter more times than I'd like to admit
