"I've been thinking of building a new machine, but I have a problem..."<br><br>Users will always have some music that they like more that other music. Knowing what of your large collection is better at a glance without actually parsing the names of things is a timesaver for many, and interesting things can be done to weight what users think is better and produce automatic "Smart Playlists" or generate CDs on the fly without having to laboriously find and add each track or whatever someone dreams up: the possibilities are limited only by people's imaginations.<br>
<br>I've looked at a number of different players, and notice two trends when it comes to storing the user's opinion of how good a song is. The first one that many encounter is the rating system of stars. Users can, at their leisure, rate songs on what is essentially a scale of 0 to 10 (with half-star gradation from unrated to perfect. I've seen this on Windows Media Player, Amarok, Foobar2000, Winamp. dBpowerAmp, I think QuodLibet, and a number of others. The other main way I see is by a score, a number between 0 and [99|100] usually, determined by an algorithm (seems to mostly relate to play count and score of similar music). As I recall, this feature <i>also</i> exists in all of the software I mentioned previously. Regardless, both of these are data that users often wish to keep, whether it be in the transition to a new computer, or on the laptop as well as the desktop, or on their portable audio players, or just in the event that they decide to move their music collection to an external hard drive (for backup or just to keep it away from the main partition). <br>
<br>Currently, the ID3v2.4 specification offers the POPM frame, that stores an email address, a rating with maximum value of 255, and an arbitrary-length playcount. It happens that this is more than adequate for the storage of score data (and indeed, some players, I believe, do so), but the other prevalent paradigm, stars, remains unhandled. If I, as a developer, wanted to store ratings <i>and</i> scores, what then? What would be the most sane way to accomplish this? Would it be possible that another field could be added to POPM frame or another frame added specifically for rating? Maybe in the future, but I believe that that sort of change would have to be made in a version jump of the specification (ID3v2.5, perhaps?). Could I use could use TXXX as a hack? I could, and it would work for many files, yes, but what about those that actually use that frame? Obviously not an adequate solution. As I look over list of frames, I find many that I have not personally used; many that <i>most people </i>likely don't even know about. I wouldn't argue for their removal or dare preempt one of them for my own purposes (I understand that each has a reason it exists and if no one cared it wouldn't be there), but I still have this problem that I would like to solve. So what do you suppose I should do?<br>
<br>73,<br>Wyatt Epp<br>