At this time, the PS Classics Xanadu CD is only available via pre-sale on the company's website and in the Helen Hayes Theatre lobby, according to PS Classics co-founder Tommy Krasker. The Xanadu CD — featuring Kerry Butler, Cheyenne Jackson, Tony Roberts, Mary Testa, Jackie Hoffman, Curtis Holbrook, Anika Larsen, Kenita Miller and Andre Ward — will hit stores Jan. 8, 2008. It entered the chart this week at No. 10.

Rhino's Jersey Boys cast recording holds steady at No. 1, again edging out Decca Broadway's Wicked, which places at No. 2.

Legally Blonde's original Broadway cast recording on Ghostlight Records also holds steady at No. 3, while Decca Broadway's Mamma Mia! and Spring Awakening round out the top five.

Along with Wicked and Mamma Mia!, the cast recordings of Avenue Q (RCA Victor) and Monty Python's Spamalot (also on Decca) have remained on Billboard's Top Cast Album Chart for the full 103 weeks since the chart's inception.

* Legally Blonde recently joined the company of those that have unseated the release of Schwartz's Wicked — which has topped the chart for 84 of the 103 weeks the chart has been published. The only other recordings to topple the stronghold are Spring Awakening, the Columbia Records two-disc "Harry On Broadway" release (with Broadway's The Pajama Game revival and selections of Connick, Jr.'s Thou Shalt Not) and The Color Purple for one week each.

Jersey Boys has now held the top spot on the chart for the most times (15 total weeks) other than constant chart-topper Wicked. The Four Seasons musical had previously enjoyed a four-week run at No. 1 following its Tony Award win as Best Musical and also reclaimed the countdown's lead position the week of Feb. 8. Then prior to its current streak, it also held the top spot for a six-week run (ending Nov. 8).

Billboard can be found on the web at www.billboard.com. Full charts are available by subscription at www.billboard.biz.