My mp3 player (a sansa clip) browses all the files by the file metadata, it doesn't do directory and filename-based browsing. So the file metadata has to be right. All my podcasts always look right in gpodder, presumably gpodder knows which podcast each episode came from because it knows which feed it downloaded it from and it knows what all the podcasts and episodes are titled from the feeds also. It's not until after I transfer the files to my mp3 player that I realise the podcaster did not tag her mp3 files. It's not uncommon for 3 or 4 files out of every 20 in a podcast to have the metadata completely missing which really makes a mess on my mp3 player. iTunes and hpodder for example support copying metadata from feed to file. For now I will probably switch to hpodder.