Going from 5.1.x or 2024.x to 5.0.x is not recommended. There are certain changes in the database that can cause issues.

Which MediaMonkey are you inquiring about? For MediaMonkey for Windows you can buy a version license which is valid for all releases in that version, or Lifetime license which is valid for the current and future versions.

M3U is supported pretty widely, but you have other options including PLS.

Yes, MP3 (lossy) is lower quality than FLAC (lossless). It will depend on what settings you used for MP3 in how much you'd experience this quality loss (ie. 320kbps MP3 would generally sound the same for most people).

Did you enable Volume Leveling in the Auto-Conversion settings?

It's working for me, and it seems you were able to get to the forum. You may want to clear browser cache/cookies and try again or try a different browser.

Are you using MediaMonkey 5.0.5? It is the only version this is working on.

That would generally follow some edits. Are you (or Addons you use) editing tags prior to this starting? Which Build (Help > About) are you seeing this on?

You can sort on additional columns holding the CTRL key down while clicking additional column headers.

You'll need to investigate (or experiment) what the device supports regarding Playlists. MediaMonkey has different options on how to Sync Playlists.

Yes, deleting from Duplicate Content deletes from anywhere in MediaMonkey.

No, this is not possible at the moment: https://www.ventismedia.com/mantis/view.php?id=20853

What file type(s) are affected?

Note that this issue isn't present in MediaMonkey 5 and up.

Did you do the interface reset: https://www.mediamonkey.com/support/kno ... interface/

Small files can be directly attached to the ticket, larger files need to be uploaded to a Cloud Service like OneDrive, and then you include the share link in your ticket.

Then I recommend trying with the latest MediaMonkey 2024 beta, it may fix this issue for you.