Las Vegas - TiVo announced on Monday that it has expanded the availability of its TiVoToGo service to Mac users. Through a partnership with software developer Roxio, a unit of Sonic Solutions, TiVo users will now be able to transfer their recorded shows to watch on a Mac. TiVoToGo for the Mac will be available later this month for $99. Separately, TiVo said it has partnered with Music Choice, a provider of digital music programming to cable TV providers. Under the deal, TiVo will offer Music Choice's library of music videos and original video programming to TiVo subscribers via the broadband TiVoCast service, beginning later this year.