MilliSong were once a good site, but due to a huge number of customer complaints about their service, I am no longer recommending them. The site has had various problems with credit card payments and numerous songs downloaded from the site have been broken or very poor quality. So much for the highest quality site out there!
My recommendation would be to use another site instead, as there are at least three other sites that do a far better job than these guys.
Please visit our Comparison Table for a list of alternative sites to buy your music from.