Both iPad and iPod are a brand of portable media players designed and marketed by Apple Inc. and launched on October 23, 2001 (2001-10-23). The iPhone can function as an iPod but is generally treated as a separate product. As with many other digital music players, iPhone, iPad and iPod, excluding the iPod Touch, can also serve as external data storage devices. Storage capacity varies by model.
Apple’s iTunes software can be used to transfer music to the devices from computers using certain versions of Apple Macintosh and Microsoft Windows operating systems.
iTunes may also transfer photos, videos, games, contact information, e-mail settings, Web bookmarks, and calendars to iPhone/iPad/iPod models supporting those features.
The iPhone/iPad/iPod can play several audio file formats including MP3, AAC/M4A, Protected AAC, AIFF, WAV, Audible audiobook, and Apple Lossless. And can play MPEG-4 (H.264/MPEG-4 AVC) and QuickTime video formats, with restrictions on video dimensions, encoding techniques and data-rates.
Unlike many other MP3 players, simply copying audio or video files to the drive with a typical file management application. The user must use software that has been specifically designed to transfer media files to iPhone/iPad/iPod, so that the files are playable and viewable. Usually iTunes is used to transfer medias to an iPhone/iPad/iPod.

The PlayStation Portable (officially abbreviated PSP) is a handheld game console manufactured and marketed by Sony Computer Entertainment.
The PlayStation Portable is the first handheld video game console to use an optical disc format, Universal Media Disc (UMD), as its primary storage media. Other distinguishing features of the console include its large viewing screen, robust multi-media capabilities, and connectivity with the PlayStation 3, other PSPs, and the Internet.
The PSP also can play audio file formats including MP3, AAC/M4A, and can play MPEG-4 (H.264/MPEG-4 AVC) video file, with restrictions on video dimensions, encoding techniques and data-rates.

Zune is the product-line brand name for the Zune portable media players, Zune software, and Zune Marketplace services sold by Microsoft, which provide online music, video, and podcast downloads. Zune’s primary competitor is the Apple iTunes/iPod product line. Zune players come in two variants, one hard-drive based and the other flash-memory based. Both play music, videos, podcasts, display images, and receive (but not record) FM radio. They can share files wirelessly with other Zunes and via USB with Xbox 360s and Windows PCs. Any Zune can also be synched wirelessly with a Windows PC.
Zune software, which runs on Windows XP and Vista, allows users to manage files on the player, rip audio CDs, manage music, and buy songs, music videos, and TV shows at the Zune Marketplace online store using Microsoft Points or a Zune Pass which allows the subscriber to download unlimited songs temporarily and permanently keep ten favorite songs each month.
As a media player, the Zune software supports the following formats — for audio: MP3(.mp3), AAC (Low complexity)(.aac, .mp4, .m4a, .m4b, .mov), WMA(.wma); for video: MPEG4(in .mp4, .m4v and .mov containers), H.264/AVC(in .mp4, .m4v and .mov containers), WMV (.wmv), ASF (.asf); and for still images: JPEG (.jpg). It organizes the media in its library and allows users to add to the library by ripping from CDs and to organize the metadata. It can automatically pull down album art and metadata tag data for content in the library.
On the PC, the Zune Network Sharing Service streams files to other PCs, the Xbox 360, and other compatible devices. There is also an inbox feature in the desktop client software as well on the device, which keeps track of songs swapped with other Zune users. On the desktop client, the inbox also serves as a message center for Zune Social. Zune requires Windows XP or Vista.

The Creative ZEN (formerly known as Creative NOMAD Jukebox Zen) is a range of digital audio players (DAPs) and portable media players (PMPs) made by Creative Technology. The players evolved from the now-defunct NOMAD brand through the NOMAD Jukebox series. The ZEN series has a strong foothold in Asian markets, especially in Singapore, the company’s headquarters.
All ZEN player compatible with MP3 and WMA, while various models support WAV and Audible files. They are bundled with device drivers and Creative MediaSource, a media player that includes transferring and syncing abilities exclusively for the players. Some models are PlaysForSure-certified for being compatible with Windows Media Player via Media Transfer Protocol (MTP) and supporting the Janus DRM. They are natively compatible with Windows, while the current players exclusively support Windows XP and Vista.
ZEN Vision can play audio(WMA-DRM, WMA, MP3, WAV) and video(WMV, MPEG 1/2/4, DivX 4/5, xvid), with restrictions on video dimensions, encoding techniques and data-rates.

The BlackBerry is a wireless handheld device introduced in 1999 as a two-way pager. In 2002, the more commonly known smartphone BlackBerry was released, which supports push e-mail, mobile telephone, text messaging, internet faxing, web browsing and other wireless information services as well as a multi-touch interface. It is an example of a convergent device. Developed by the Canadian company Research In Motion (RIM), it delivers information over the wireless data networks of mobile phone service companies. BlackBerry first made headway in the marketplace by concentrating on e-mail. RIM currently offers BlackBerry e-mail service to non-BlackBerry devices, such as the Palm Treo, through the BlackBerry Connect software. The original BlackBerry device had a monochrome display, but all current models have color displays
Many BlackBerry smartphones include a media player for music and videos. You can even transfer your desktop iTunes music files to your BlackBerry smartphone.

With the media player included on the BlackBerry® Storm™ 9530 smartphone, BlackBerry® Pearl™ smartphones, the BlackBerry® Curve™ and BlackBerry® 8800 series smartphones, the fun goes with you.
Play video and music files in vivid color and rich sound, can play audio(AMR, MP3, AAC, WMA) and video(WMV, 3GP, AVI, H.263, MPEG-4), with restrictions on video dimensions, encoding techniques and data-rates.
Use wireless Bluetooth® stereo headphones or speakers to enjoy your music
Shuffle your songs or enjoy your favorite playlist while you reply to messages
Watch a news or sports clip while catching the train to work

A personal digital assistant (PDA) is a handheld computer, also known as a palmtop computer. Newer PDAs also have both color screens and audio capabilities, enabling them to be used as mobile phones, (smartphones), web browsers, or portable media players. Many PDAs can access the Internet, intranets or extranets via Wi-Fi, or Wireless Wide-Area Networks (WWANs). Many PDAs employ touch screen technology.
Many Windows PDA supports audio(WMA, MP3) and video(WMV, 3GP) playback.(With restrictions on video dimensions, encoding techniques and data-rates)

A Pocket PC, abbreviated P/PC or PPC, is a hardware specification for a handheld-sized computer (Personal digital assistant) that runs the Microsoft Windows Mobile operating system. It may have the capability to run an alternative operating system like NetBSD, Linux, Android or others. It has many of the capabilities of modern desktop PCs.
Currently there are thousands of applications for handhelds adhering to the Microsoft Pocket PC specification, many of which are freeware. Some of these devices also include mobile phone features. Microsoft compliant Pocket PCs can also be used with many other add-ons like GPS receivers, barcode readers, RFID readers, and cameras.
In 2007, with the advent of Windows Mobile 6, Microsoft dropped the name Pocket PC in favor of a new naming scheme. Devices without an integrated phone are called Windows Mobile Classic devices instead of Pocket PCs. Devices with an integrated phone and a touch screen are called Windows Mobile Professional devices and devices without a touch screen are called Windows Mobile Standard devices.[
Mostly Windows PPC supports audio(WMA, MP3) and video(WMV, 3GP) playback.(With restrictions on video dimensions, encoding techniques and data-rates)