There are myriad ways that computers can aid language learning.
Language settings
As a challenge, change the language settings on your computer to the language you intend to learn, and you'll gradually find your way around the terminology, learning by example and by doing. When you see an error message you don't understand, google the words and make notes on the language as you decipher it. Quite possibly create multiple user accounts, one for each language.
Music software
See Music Software for more. Time stretching in modern music software is nothing short of incredible. Of particular note when learning languages, you can take a sample of speech and slow it down by up to a factor of 4, with it still remaining intelligible. I think Duolingo's slow mode is slightly better, but that almost certainly requires preparation by Duolingo and can't be applied as a general technique to arbitrary recordings of speech.
Streaming
See Media, but basically you can watch streaming services like Disney+ and Amazon Prime with the language settings set to your target language. for the most part the level of language will be beyond you, and you won't really understand what they're saying, but by watching the action and trying to work it out, while listening, I to think it aids your ear when it comes back to listening practice at a the level you're at.
Google Chrome
You can change the language settings in Chrome, and have it translate pages into your target language. In addition, you can create multiple user profiles, each with their own settings, one for each target language.