WMA is often not supported by the device, thus you need to [url=https://www.mediamonkey.com/wiki/WebHelp:Exporting_Tracks/5.0#Auto-Conversion]Auto-Convert[/url] to a supported format like MP3 on Sync.

On android version 4, Verizon Samsung
A53 5G, .wma 160k files are not playing back.
Same files play fine on windows v10 platform. Checked on several albums. Same results.