How To Convert MP3 To MP4 [Easy 2023]

This is not free very costly.

Unfortunately, this didn't help. When I went to the site, it said my Chrome needed to be updated. When I attempted to update it, it still didn't work. When I downloaded the program from the Web site, and tried to convert it on my laptop, it is running VERY slow. For a 2 hour MP3 audio (not video) it is moving by the 1/10s of a percent. Any other suggestions?