[LAU] Simple hardware & software for digitizing analog audio recordings

[Adam]

Hello everyone!  I just joined this list and already I feel I'm in 
way over my head. :-)  I have one simple question, but it definitely 
involves using Linux for audio.  In fact, it's such a simple and 
common question that I'm almost embarrassed to ask the experts here 
about it.

I've finally got my collection of analog sound recordings (LPs and 
audiocassettes) down to the relatively few that aren't available in 
any digital format but are worth preserving.  That means I'll have 
to digitize those myself.  So --

Can anyone recommend (or disparage) any particular hardware and 
software for digitizing sound recordings?

Here are some specifics about my equipment and my expectations:

Something close to CD quality or 320 kbps MP3s will be "good enough" 
here.  I'll be dealing only with existing stereo recordings.  I 
already have a turntable, receiver (including phono preamp), and 
cassette deck, all working, that are IMO good enough.  I also have 
the 25' of audio cables (RCA plugs) necessary to connect my "stereo 
system" to my computer, unless rearranging my entire room to bring 
them closer together would make a significant difference.

At the computer end, I have an low-end Compaq desktop with 
integrated audio (inadequate quality for input here) running 
Mandriva 2010.0, an available PCIe-x16 slot and some USB 2.0 ports 
(no Firewire), plus lots (hundreds of GBs) of free HD space.  For 
the new audio hardware, I'd prefer something that not only fits this 
machine and runs well under Linux, but will also be usable in future 
desktop Linux systems (e.g. not a plain PCI card if possible).  
Anything that would fit into that PCIe x16 slot (I understand a PCIe 
x1 card will work in a PCIe x16 slot) or a USB port -- I just need 
something that will accept line-level stereo inputs.  I'm hoping to 
find something decent in the US $40-80 range, new or used.

For software, I thought I could use 'rec' to put the digitized audio 
into some standard file format (and automatically split it into 
tracks if desired), and 'audacity' for the digital signal processing 
(noise reduction, declicking, etc.).  Or are there other programs 
that would be better for me, either in audio quality or ease of use?

Any recommendations for hardware or software, especially hardware, 
would be very much appreciated!  Suggestions on where else to look 
for advice would be welcomed too.  Thanks!

Adam