Mp3 players, now is 1000 brands Such : Alienware , Apple, Archos , Audiovox, BenQ , BUSlink, CenDyne , Centon Electronics, Coby , ColorWare, Cowon , Creative , D-Link, Digit@lway , Digital Global Network , Digital Media, Digital Research Technologies, EDGE Tech Corp , First International Digital, GoVideo, GPX, GrandTec, HP, HyunWon, I-JAM , ilo, iLo , iRiver, ISonic, Jaton, JVC, Kanguru Solutions, Kreisen, Lexar Media, Mach Speed Technologies , MadWaves , Memorex , Micro Star International Computer, mobiBLU, Nextar, Olympus , Oregon Scientific, Panasonic, Philips, Pioneer, PNY, RCA, Rio , Samsung , Sandisk, SanDisk, Singapore Shinei Sangyo, Skullcandy, SmartDisk, Sony, Toshiba, Transcend Information, TrekStor, Ultra Products, Wolverine Data. Mp3 players storage : Hard Drive Size 64 gb , 128gb , 512 GB , 1gb , 10gb, 20gb, 30gb, 40gb , 60gb ,or mp3 players with Memory stroge : 126MB, 512 MB , 256 MB, 1GB, 2GB, 3Gb. Format run on mp3 players ; Audio Format ; MP3, WMA, WAV , WMA DRM , Audible, AAC , AIFF, ADPCM , Apple Lossless , ASF , etc. MP3 player , System Compatibility ; Windows - 98 , xp , etc.- , Mac , Unix, Linux.