CDs are disappearing

[Wanderer]

mp3 files can always be converted to the future formats. There is always temporal overlapping of formats and technologies.

No argument there, if one disregards the issue of quality loss when converting from an already degraded audio format as opposed to from the original (physical or losslessly encoded) media.
The original question, however, was about using mp3 files as such, unmodified, in the far technological future. That's what you should have quoted, instead.

[71 dB]

No argument there, if one disregards the issue of quality loss when converting from an already degraded audio format as opposed to from the original (physical or losslessly encoded) media.
The original question, however, was about using mp3 files as such, unmodified, in the far technological future. That's what you should have quoted, instead.

Well, future formats are most probably lossless. Converting lossy format into lossless doesn't create further damage to the sound quality.

I don't see why mp3 (and other popular lossy formats) would not be supported in the future. 

[Wanderer]

Converting lossy format into lossless doesn't create further damage to the sound quality.

Irrelevant. Compared to converting from the original (physical or losslessly encoded) media, it does. Again, do pay more attention to what you're quoting.

[71 dB]

Irrelevant. Compared to converting from the original (physical or losslessly encoded) media, it does. Again, do pay more attention to what you're quoting.

I didn't know I am quoting something. I thought I was telling my opinion. Of course lossless is better source, that's why I buy CDs instead of lossy mp3s. But if you happened to have lossy files there are options in the future to play them.

I was commenting playback of mp3 in the future. The sound is not perfect but I believe you can play the content directly or after file conversion.

[Wanderer]

I didn't know I am quoting something. I thought I was telling my opinion.

You almost always are quoting something, in this case my posts. If you merely want to state your opinion, then, starting next time, do push the "reply" button instead of the "quote" button.
Quoting someone else's posts, as you've done here, raises the expectancy to reply to and in relation to them and it's only polite not to mishandle your quotes in the process.

Of course lossless is better source, that's why I buy CDs instead of lossy mp3s. But if you happened to have lossy files there are options in the future to play them.

I agree. However, to return to the original question, I highly doubt the mp3 format in particular will survive 20 years of technological progress.
Only the future will tell, of course.

[71 dB]

You almost always are quoting something, in this case my posts. If you merely want to state your opinion, then, starting next time, do push the "reply" button instead of the "quote" button.
Quoting someone else's posts, as you've done here, raises the expectancy to reply to and in relation to them and it's only polite not to mishandle your quotes in the process.

That's unnecessorily remark from your side. Perhaps I just misundertood your post I was quoting? I was busy making food and hungry.