OK.. the files with those odd characters are Asian languages (such as Japanese) you could in theory install support to display them correctly, but unless you know, Japanese, Korean etc. you still wouldn't be able to read them...
The server stats you're referring to, give you the number of users with slots available so "3+2" would indicate 3 users with slots free & 2 you'd need to queue & wait with.. the "nnn of nnn available" shows how many free upload slots a given user has...
The size of a given music or video file has as much to do with the quality it's encoded at as it does with the time it runs, i have audio book files which run over half an hour that are smaller than some 3 minute music tracks, because speech doesn't require the quality music does..
A file as small as 36 bytes is likely to be a fake of some description, the whole purpose of which is to direct you to a website, very occasionally such a website MAY have audio or video streams... but it's not the way to bet, & they're more likely to have viruses or trojans... or at the very least attempt to get you to part with money, for memberships etc.. an old marketing ploy used by many porn sites..
