Getting Mixing board RCA output into a computer with no mic input

[bowesj]

Hi, I have a question about #3 below.

1. I am buying a new notebook/laptop computer that will run the latest and greatest "Band In A Box" with Windows 10 (or Windows 7 if necessary).
2. I will be feeding BIAB out the computer's headset output to a mixing board then out the mixing board's RCA outputs to some amplifiers so jam session players and audience can hear it in proper balance.
3. While doing #2 above I want to feed the signal from one or more mics through another mixing board's RCA outputs back in to the computer through the mic input for recording with Audacity.

The problem with #3 is most of the notebook/laptop computers have no Mic input now even though they all have headset output [I know of one very expensive I7 notebook/laptop that does have a mic input (like $900 more expensive)]. So assuming I don't want to spend the extra $900 for this more expensive computer what is a good way to go about getting the 2nd mixing board's RCA output into the computer (hopefully at a cost less than $900).

Thanks,
John

[bowesj]

Actually, I figured out how to answer this question (ask a computer sales person) so I am trying to delete this post but I can't find a delete button.

[rjb]

Or you could share the answer you got from the computer sales person.

[bowesj]

I was thinking more along the line of deleting and not wasting people's time but Yes I could do that. The sales person did not know but the tech person pointed me at a VHS RCS to computer converter but he was concerned about the video part. I have been doing a few google searches "mixer RCA output computer usb input". I will just dump everything I find here.

lots of stuff (sweetwater)
http://www.sweetwater.com/c695--USB_Audio_Interfaces

lots of stuff (Long And McQuade)
https://www.long-mcquade.com/departm...Interfaces.htm

$30.00 Here is an XLR mic to USB
http://www.sweetwater.com/store/detail/MIC2USB

$44.00 This device can do RCA input and output to computer USB
https://www.amazon.ca/Ultra-Low-Late.../dp/B000KW2YEI

$48.00 same as above but from (Long And McQuade)
https://www.long-mcquade.com/5505/Pr...tal_Output.htm

$349.00 Peavey PV 10 AT 10-channel Compact Analog Mixer with Auto-tune Pitch Correction, Bluetooth Connectivity, Universal Input Microphone Preamps, LCD Display, On-board Effects, USB, and Switchable hi-Z Guitar Preamp

$385.00 Behringer X1832 USB - 18 Input 3/2 Bus Mixer wit EFX and USB (Long and McQuade)
https://www.long-mcquade.com/7495/Pr...FX_and_USB.htm
http://www.sweetwater.com/store/detail/PV10AT

$400.00 Zoom R16 16-track Portable SD Recorder, USB Audio Interface, and DAW Control Surface with 8 Microphone Inputs, Built-in Stereo Condenser Microphones, Built-in Effects, 1GB SD Card, and USB - Mac/PC
http://www.sweetwater.com/store/detail/R16

$400.00 Peavey PV 14 AT 14-channel Analog Mixer with Auto-Tune Pitch Correction, Bluetooth Connectivity, Universal Input Microphone Preamps, LCD Display, On-board Effects, USB, and Switchable hi-Z Guitar Preamp
http://www.sweetwater.com/store/detail/PV14AT

$500.00 Zoom R24 24-track Portable SD Recorder, USB Audio Interface, Pad Sampler, and DAW Control Surface with 8 Microphone Inputs, Built-in Stereo Condenser Microphones, Built-in Effects, and USB - Mac/PC
Looks like it runs of batteries or has an AC adapter.
http://www.sweetwater.com/store/detail/R24