is there any news about 128 gb (or higher) iPod Touch? 64 is too small for me so if I go down that route, it won't happen with 64 gb.
Secondly, that 240 gb iMods are working with M8, that's I got it but I would like to learn which files I can play with that iMod Classic? I mean, it does play ALAC 16 bit and WAV 16 bit.
Which one I should choose alac or wav? Are there any difference?
Also, which program you would suggest me to use?
No news about a 128GB iPod Touch. I've been on the lookout as well. Another option would be to get a wireless drive like the 1TB Seagate Wireless Plus (which I have) and stream from that using WiFi and Seagate's proprietary app.
An iPod Classic will play ALAC 16bit and WAV 16bit 44.1kHz files. I am fairly certain it will play 48kHz files (my iPod Video 5.5G does in its stock software). I don't think it will accept 96kHz files at any bit depth -- iTunes won't let you copy them over. An iMod is and iPod that has some internal mods done to it, and I think that changes the line-out dock requirements (but am not sure about that).
ALAC and WAV are both lossless, and ALAC is lossless compressed so the file sizes are smaller (sorry as this is probably obvious). I don't notice any difference between ALAC and WAV in listening, but that is maybe better discussed in the Sound Science forum.
Converting FLAC to anything will require something other than iTunes. If you can get your FLAC files into WAV, iTunes will convert them to ALAC to shrink the file size. I've done this (FLAC -> WAV -> ALAC) but forgot how I did the first step.