I connected an analog tape deck to my Soundblaster Audigy Analog Line-In input. I have a 2 to 1 cable connecting the Tape-OUT to the Audigy-LINE-IN.
I can't hear any sound when the Tape Deck plays. I have no problem when on Windows.
How do I get the tape deck to play on Ubuntu?
Recommend installing alsamixer it will grab those settings from your PCM card and you can modify the settings as you wish.
Installing
Install with Command Line
Adding the ppa
Install the linux-alsa-driver-modules package
Note: After installing the linux-alsa-driver-modules package, your system needs to be rebooted.
If you need other information or troubleshooting refer to:
https://help.ubuntu.com/community/SoundTroubleshooting