I bought the
Philips GoGear SA3245 4Gb MP3/MP4 Video Player about a month ago and like one of your reviewers, had problems getting the computer to recognise it. In the end I completely reset the device as described in the manual and this did sort of work, but the original problems were still intermittent so I sent the device back (Amazon where great and I had a replacement player within a few days).
The replacement player worked faultlessly, but I was a bit disappointed by the jerky scrolling text when playing audio files and I could not get any SMV video file to play properly (both audio and video playback were 'jerky' or broken as if I had the wrong encoding settings). I played around with various AVI/WMV settings, but in the end concluded that there was something wrong with the player. I was about to give up and in desperation went to the Philips web pages for the player (you always assume that it is something you're doing wrong!). Here I found updates to almost all of the software that had been supplied on the CD that accompanied the player. After downloading the new device firmware, it took a lot less time to start, the text on the audio stopped juddering and the graphics on the video playback also changed and the video & audio stopped jerking and breaking up. I also downloaded the updated version of ArcSoft media converter which provided a much better interface.
So, after the initial disappointment, setbacks and lots of hair pulling, once I had the right firmware in the device and software on my computer everything worked perfectly.
As far as audio and video quality is concerned, I've not owned any sort of MP3/4 player before so had no preconceptions, but I've been pleased with the results so far. I've now SMV'ed a few films and series to see how they perform and although the resolution is not that great, it is watchable (what do you expect from 1.8"?).
So, if you are having any problems, check out the Philips web pages for the device and make sure that you have the latest versions of the software. Other than that, you can't really go wrong.
Oh, just a couple of points... It does take a long time to convert from AVI to SMV and although WMP is ok, it did not recognise quite a few of my CD's and I've spent longer than I wanted to typing in the play lists by hand.