This Could Max My VISA Fast
iTunes Music Store Player - Great for background iTMS browsing, this script plays all the tracks listed in the Music Store window without having to click on each one manually. The author suggests: Go to the Music Store (in iTunes 4) and do a search on “jazz”. It will spit out a list of some 250 songs. With this script you can automatically play them all, do some work, and if you like a song that is playing you switch to itunes and buy it… 
Written by Phillip Ringli - Download It Here >>