It's a Korean music service which lets you download unlimited number of songs for $4.50 per month. Each song is a DCF (DRM Contents Format) file, which can be played:
- On the downloading PC,
- On one MP3 phone (such as SKY IM-72001) associated with the account, and
- On one MP3 player (such as Cowon iAUDIO X51) associated with the account.
The DCF license expires in 4-5 weeks and must be extended/renewed periodically (without re-downloading the file); Melon Player, the client software, automates the batch renewal process, so it's not that much of a hassle.
I'm downloading the songs on this week's top 50 K-pop chart—all of them—right now, playing them on the computer at the same time. ♥
1 I have both of them. IM-7200 since March 2004; X5 since the last birthday. ♥