5 life hacks on how to modernize old stereos, radios, DVD cinemas
1. New life for an old music center

It is enough to build a Chinese module into the center and you will again have equipment that will read all modern formats from digital storage devices. Moreover, all functions of the center from the cassette player to the CD player will remain fully functional. Read how to do this here - https://home.washerhouse.com/en/5644-novaja-zhizn-dlja-starogo-muzykalnogo-centra.html
2. Upgrading an old music center into a new one with your own hands

A similar upgrade, but more interesting, since the MP3 player module is installed in the cassette deck - https://home.washerhouse.com/en/4972-modernizacija-starogo-muzykalnogo-centra-v-novyj-svoimi-rukami.html
3. New life for an old home theater
An old home theater is equipped with a powerful and high-quality amplifier to add Bluetooth to it and make a connection point for even a laptop or smartphone, read here - https://home.washerhouse.com/en/6696-novaja-zhizn-dlja-starogo-domashnego-kinoteatra.html
4. Second life of an old radio
Radios without USB are simply a boom in discarded equipment. Read how to add a USB player to an old radio here - https://home.washerhouse.com/en/6036-vtoraja-zhizn-staroj-magnitoly.html
5. How to install Bluetooth into any car radio yourself
To give the radio only the Bluetooth function with minimal modification, then the following life hack will be useful to you - https://home.washerhouse.com/en/5058-kak-samostojatelno-vstroit-bljutuz-v-ljubuju-avtomagnitolu.html
As a result, old musical equipment will successfully serve for many more decades with the right approach.
Modular video players on AliExpress
Now AliExpress has new players that, in addition to audio, also read all video formats, thus allowing you to turn your “trash” into a real cinema - http://alii.pub/5kpff5 But their size remained the same.