The client is based on the open-source Helix Player which can be found at the Helix Community Website. It supports Windows Media 7/8, RealAudio/Video, MP3 and Ogg Vorbis. The interface depends on the current GTK+ theme. The Android version of RealPlayer is currently available as a free download from the Google Play Store. It supports Real Audio, Real Video, MP3, 3GP, AMR, and other media formats. The Symbian version of RealPlayer allows mobile phones to play Real Audio, Real Video, MP3, 3GP, AMR, and other media formats. It is provided as freeware. In newer Symbian devices it can also be used to stream both audio and video content in the form of MP3 (music) and 3GP (videos). RealPlayer 1.6.1 (US) or RealPlayer 1.6.0 (worldwide) is available for free for PalmOne-made Palm OS 5 devices, such as the Palm Tungsten or Zire series. It is also compatible with RealPlayer Music Store tracks. However, they will neither install nor run on non-PalmOne-made devices like Sony's Clie line of PDAs. Realplayer for Palm OS does not support later Palm smartphones such as the treo 700p, 755p, or Centro, although the treo 600 and 650 are listed as supported devices. RealJukebox was a computer program released by RealNetworks that allowed users to organise their digital music. It was first released in May 1999. By late 2001, the functions of the program had been integrated into the Real's core media player program, RealPlayer. Past versions of RealPlayer have been criticized for containing adware and spyware. In 1999 security researcher Richard M. Smith dissected some of RealJukebox's network traffic and discovered that it was sending a unique identifier with information about the music titles to which its users were listening. RealNetworks issued a patch, and the spyware was removed in version 1.02. Their download page stated RealJukebox included privacy enhancements and gave a link to the privacy policy. "PC World" magazine named RealPlayer (1999 Version) as number 2 in its 2006 list "The 25 Worst Tech Products of All Time", writing that RealPlayer "had a disturbing way of making itself a little too much at home on your PC installing itself as the default media player, taking liberties with your Windows Registry, popping up annoying 'messages' that were really just advertisements, and so on."