LineIn
LineIn
2.3.0

4.6

LineIn free download for Mac

LineIn

2.3.0
10 September 2014

Enables soft audio playthrough from input devices.

Overview

Note: LineIn is no longer under development, and it is no longer available for sale, but is still available for download
LineIn enables the soft playthrough of audio from input devices. In simpler terms, you can use LineIn to play sound through a microphone or any other device plugged in to your Sound In port. If you need to input audio from an external device, recreating OS 9's "Play input through output device" option, then LineIn is perfect for you

What's new in LineIn

Version 2.3.0:
  • A long-standing issue with latency has finally been cured
  • Added a menu item for toggling play-thru

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25 LineIn Reviews

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Anonymous
02 April 2004

Most helpful

I use "Audio MIDI Setup" to preform the same task on MacOS X 10.2.8 No need to download anything, it's already installed on your system. Click this link to find it on your computer... file:///Applications/Utilities/Audio MIDI Setup.app
Like (1)
Version 1.2
It looks like their Loopback app can do this - I just used it to route my Line-In to my surround-sound speakers ;-) https://rogueamoeba.com/loopback/
Like
Version 2.3
FYI, I use SoundSource from Rogue Amoeba for sound selection and also it has a Line In function. On SoundSource 3 (free to any owners of Rogue Amoeba software) it is called "Open Play-Thru Window" and then you click "Start" to route Line-In to your selected output. I just started a trial of SoundSource 4 (just released) and haven't seen (yet) how to redirect Line-In to Output. But I will find it ;-) Anyway, to get your free SoundSource 3 that includes "Play-Thru", find a Rogue Amoeba license that you bought and go here: https://weblog.rogueamoeba.com/2017/02/14/soundsource-the-sound-control-that-should-be-built-into-macos/
Like
Version 2.3
attilahun
04 December 2018
I'm using LineIn it to route audio from my tv (toslink) to my Mac mini to my dac. Is there any way to use my apple remote control to control volume via my Mac mini? Many thanks
Like
Version 2.3
Dualist
03 March 2016
I have used this for a very long time now, but unfortunately, with the new iMacs sans audio in port, it doesn't work as well as it used to. I was forced to purchased a USB audio input device and with some fiddling I managed to get it working, but the creeping latency has returned and periodically I need to reset "Play Thru" in order to eliminate increasingly garbled sound. It's not a huge deal, and LineIn mostly works still, but it would be really nice if it was updated again sometime soon.
Like
Version 2.3
2 answer(s)
Dualist
Dualist
25 April 2016
I finally broke down and purchased Loopback from Rogue Amoeba. It's really expensive ($75) and I found I still needed to install Soundflower. and have an aggregate output device setup through Audio Midi Setup, but at least I get play-thru without gradual latency. It doesn't need to be running either.

I'm using a Griffin iMic with a late 2015 iMac, if anybody cares.

Thanks for the many years of pass-thru audio, LineIn.
Like (2)
ylluminate
ylluminate
24 November 2016
Hey that's a great tip there. Thanks Dualist! If you have a blog, that would be a great walkthrough to show.
Like
brookepeters
06 January 2016
Help. I have a Mac (Yosemite, 10.10), a Yeti USB mic and the latest version of LineIn. It sounds terrible in my headphones...echo-y, boomy, delayed maybe...perhaps this is the latency issue that was supposedly corrected in this version? Is there anything I can do to fix it? Such a bummer. I was so excited to finally find a way to hear myself through my headphones and apparently I'm not supposed to be having this problem anymore.
Like
Version 2.3
Wunderhorn
02 July 2014
Works well, easy to use.
Like
Version 2.2.0
Sam"Bytemunch"E4561
21 April 2014
I needed some tunes for a party and didn't have a charge cable for my speakers. Two minutes on Google and I find this, plug a phone in through a 3.5mm to a random port on my iMac, mess with the settings on the app and boom, party is back! Cheers guys :D
Like
Version 2.1.1
wimadrid
09 September 2013
Excellent, I can finally hear the music from my USB turntable directly on my mac! Until I found LineIn, I used one of these workarounds: - Recording with Audacity with Audio Playthrough (Preferences/Recording/Software Playthrough) - Recording with QuickTime Player. As soon as you hit record (File/New Audio Recording) the sound goes to your default output, just remember to turn up the volume which QT always seems to set to mute.
Like (1)
Version 2.1.1
seba-szwarc
25 October 2012
It's nie app. However I stil didnt figure it out how to set up microphone on usb properly. When I put pas-throough button i hear some noise something like feedback bettwen microphone and external speakers.
Like
Version 2.1.0
2 answer(s)
B-Jefferson-Le-Blanc
B-Jefferson-Le-Blanc
24 April 2013
The answer is in the name of the product: LineIn. It's not intended for USB audio in, but for your Mac's audio-in jack.
Like
wimadrid
wimadrid
09 September 2013
First, LineIn *does* work with USB audio. I have read and seen that when you plug in something that uses USB Audio, the system will initially set that USB both for Sound Input and Output, so you might check that.
Like
Atterboy
22 October 2012
Was looking for a way to play music through my mac from my record player via a USB cable input - this was perfect! love the simplicity and the fact that it worked straight away (no tweaking required)
Like
Version 2.1.0