Its not the mp3 files but the individual jpg cover art files that are in each CD or album folder. Windows, or specifically, Windows Media Player, is to blame as it downloads and includes those in the folder when it rips a CD to mp3 or update the file info. This way, the album art show up in windows explorer when you view your music folder. However, they're of no use to you on the pre.
Originally Posted by TJs11thPre
These are invisible by default so you'll have to enable the option to view invisible files on the PC. Once that is done, mount the Pre (via WiFi or USB), go to the folder that contains the music and search only that folder for all jpg files by entering *.jpg in the search box. The offenders will be named 'Folder.jpg' as well as series of longer weird-looking names with the .jpg extension. They can all be trashed. Be careful if you have other jpeg files like downloaded pics or mail attachments in the download folder; deselect them before clicking 'delete'.
You may want to actually tag your tracks the proper way before deleting the album art so that they show up in your music app. You can do so with an app like Mp3tag while the Pre is connected to the PC. Use the 'Folder.jpg' file as its larger than the others (~300x300).
While you're at it, you can also trash the many Desktop.ini files that windows placed in those folders. More importantly, you should consider rearranging your music collection for better management. They should all be placed in an AUDIO folder. Some people use MUSIC but the effect is the same - a dedicated folder for your music. Some apps actually look for an audio or music folder (just as all cameras look for, and utilize DCIM for pics) and give an error (or create said folders) if not found. They may fail to list your tracks in that case. With webOS' media indexer doing the searching and listing of tracks, this obviously is not a problem, but its a good practice to adopt anyway as other devices may create issues.
Correct, the best thing to do is delete the separate album art files as only Windows use them in this way (introduced with Windows Me??).
Originally Posted by gizmo21
Right! The album art that is tagged within the mp3 files are not visible to the media indexer and wont show up in other apps - only music players will display them.
But is it really the mp3 file itself that "smugles" in the cover picture (via id3-tag) into the gallery or is like with my folders a seperate cover.jpg (e.g) file. Then you could just delete those in the /music folders.
I have many mp3 files with covers included but non of them appaer in gallery as long as no seperate real jpg file is in the folder.