LineIn for Mac enables those with good speakers on their Mac systems to play audio from external devices. While some operational glitches exist, this application adds some functionality to Mac systems, but ultimately not enough to recommend it for most users.
The program's small size allowed for a quick download and installation. LineIn for Mac is free, which is readily apparent in its basic interface. There are few graphics to guide users and the lack of a tutorial is noticeable. The menu has a line for input and another for the output. Once the appropriate option is selected, an additional button activates the program. Unfortunately, the default options were problematic on the test computer. When initiating the application, the Mac's microphone immediately began creating an unpleasant feedback. Once the input was properly adjusted to the correct settings, the program worked as intended. The output sound generally matched that of sounds coming from the testing computer, itself. There were no other options, which made the program less useful than it could have been had there been even basic ones, such as finer audio adjustments.
LineIn for Mac's lack of any advanced features limits its usefulness, but for those who need this type of functionality, it works fairly well with some user input.