I've been asked to help with getting a weekly sermon recorded and ready for uploading to the internet.

I've found Tape Out left and right RCA connections on the sound system. My research so far shows that I could use this to feed a computer line in jack and record with some free software called Audacity. The post processing would involve saving the recording to an MP3 file and handing off to the web page folks. However, current computers might not have the line in jack anymore?

Is there a way to do this without a computer? A simple device? Simple will be better in this case!

Thank.
Jim