List of file sound extensions

[madscijr]

As I mentioned, m4a, mp4, and all those other m4 files are *licensed* and not open source.  You have to pay $$$ to use them in your software, and since QB64PE is freeware and doesn't cost anything, it's not a format we have access to.

https://www.via-la.com/licensing-2/aac/license-fees/

Volume (per unit*/annual reset) Per Unit Fee
For the first 1 to 500,000 units $0.98
For units 500,001 to 1,000,000 $0.78
For units 1,000,001 to 2,000,000 $0.68
For units 2,000,001 to 5,000,000 $0.45
For units 5,000,001 to 10,000,000 $0.42
For units 10,000,001 to 20,000,000 $0.22
For units 20,000,001 to 50,000,000 $0.20
For units 50,000,001 to 75,000,000 $0.15
For units 75,000,001 and more $0.10

Wow, that adds up! For m4a and mp4 files, I'd just convert them. I've been using VideoProc Converter AI for audio/video and it works pretty well, but it isn't free.  Any recommendations for a good free media converter?