hi and thanks for an awesome product. I am on v2.05, used Audacity for 5+ years.
While I was trialling different settings on recording (s/w playthrough, latency levels etc) I have somehow wrecked the ability to play via MME. So now MME plays with distortion, Win DirectSound also distorted, WASAPI works fine, but removes the ability to record. I have checked soundcard, re-installed audacity, not doing anything more complex than I have done hundreds of times, but now done lots of swearing. Any ideas?
“Reinstalling” Audacity is not always straightforward. Scroll down to resetting Audacity.
http://manual.audacityteam.org/o/man/faq_installation_and_plug_ins.html#win_uninstall
Koz
If the problem persists after reinstalling Audacity with “Reset Preferences” checked, check if you have changed a setting in Windows or your sound card.
What version of Windows is it?
Gale
fixed! thanks heaps.
It simply required an uninstall then reinstall - basic windows etiquette that I did not follow 
Good. 
It is best to start a new topic for unrelated questions. I moved your feature request about “support for two line ins” to http://forum.audacityteam.org/viewtopic.php?f=20&t=78300 .
Gale