I think this topic is something we've completely missed.
Lets compare the sound and process of our MP3 and listen to the results.
I can or someone can provide a 44.1 via soundcloud, we compress it and use the upload button to store and compare . It should make a good discussion.
Until someone has another source, use my Daughters:
Soundcloud stores the full bandwidth ( to what was originally uploaded), make the link downloadable and MP3 it.
NOTE: not sure if this is just my system but 192kbits appears to be the highest I/we can playback here so please do the same so we are all on an even bit rate.
See image attached on downloading the file. On Firefox I see an arrow on the top right corner soundcloud wave. Click that and the full bandwidth file will download to your computer. My system is clean, the files should be safe.
Then, upload your processed MP3 to RO server