ya media gates , you can network them without a hdd, or stand alone with. the one youd be after is the hd version MG-45HD, about $300. Plays media-files from remote fileserver via wireless and wired Ethernet , NTFS HDD storages can be connected at any time via USB port; I am not 100% on this but you may be able to add a usb tv tuner or external blueray/cd via usb.
http://203.185.232.2/dbs/images/products/8739.jpgspecs are similar
* Supports HDMI.
* 802.11g wireless connection
* Time-sliced dual-band 11a/g upon request
* One 10/100 Ethernet port (No NDAS)
* Supports FTP Server & Client
* USB2.0 host port. Thus USB storage devices can be attached and the stored content can be played directly
* USB2.0 slave port - an alternative way to download digital contents from the PC
* Supports MPEG-2, MPEG-4, ISMA MPEG-4, MPEG4 and over MPEG-2 transport and streaming.
* Can be configured with
o Web-based movie distributor as a media gateway to access, play and/or legally download movies from the web
o Downloading without a PC
o Optimal OEM/ODM solution in high-performance DMA
* Supports HD MP2, MP4
* Supports MP1/2@HL (720p/1,080i), MP4@L5 (720p) and MP@ML (720p)
* Supports composite, S-video, component video outputs
* Supports stereo L/R, optical/coaxial digital audio, analogue 5.1 channels
* Supports JPEG/BMP/GIF/PNG still picture
* File-surfing from multiple sources on TV using a remote controller
* Antenna: 2.5 dBi
* Power: DC 5V, 12V
* Weight: 250g (Without a HDD)
* Dimension: 57 x 150 x 185 mm
* Operating Systems: Windows 98SE/ME/2000/XP, MAC 9.0 higher Linux 2.4 higher
* HDD Type: 3.5" SATA HDD
* HDD File System: FAT32, NTFS
* TV Type: PAL, NTSC
* Supported Formats
o Movie : MPEG 1, 2, 4 (MPG, MPEG, AVI, M2V, DAT, VOB, etc) , XviD (Except GMC, Qpel option applied)
o Music : MP3, OGG Vorbis
o Photo : JPG, BMP, GIF, PNG
* Video Output:
o Composite 1Ch : 1.0Vp-p (75Ω load)
o Component Y : 1.0Vp-p (75Ω load) Pr : 0.70Vp-p (75Ω load) Pb : 0.70Vp-p (75Ω load)
o S-Video Color Signal : 1.0Vp-p (75Ω load) Luminance Signal : 0.286Vp-p (75Ω load)