Hybrid8 is correct. I wanted to clarify a couple of things, though:

1) When you first send your songs to the player, it reads the tags to get the information for its song database. It will read either V1 or V2 tags, or both.

2) It's important to have your tags filled out ahead of time so that the search features on the player can be useful. You can search by year, by genre, by artist, by title, or by album.

3) You said that you have a strict file-naming system. This is nice, but the player software won't use it-- the file names don't survive the trip to the empeg. MP3 Tag Studio will do a great job of converting those file names into tags, so it should be a snap to have it do all the work for you. Make sure to get that job done while you wait for the player to arrive at your doorstep.

4) Tags are better than file names because they can contain characters that aren't allowed in file names. For instance, if you have a song title with a question mark, or a slash character, or an asterisk, or some other illegal-for-DOS character, then you can put it in the tag.

More details on creating MP3s and tagging them can be found in the FAQ.