need some help with J River and a new pc

just upgraded my pc this week and ran into a major problem. hoping someone here might be able to help. OS is windows 7 home premium. ripped 1200 cd's onto my old pc. 85% was done in WAV and 15% done in ape and all my stuff over using and external hard drive. my data is on the new pc.....i can see it. problem is, J River will not import the libary correctly. i can see all my music when i use "file view" but in album or artist view....only the ape and m4a music is showing(cover art is there as well)??. in file view, all my ape and m4a list an album title, genre and date, but the wav files do not. wav files only show artist. thinking this could be the problem. any help here would be great.

I'm not sure what you mean by "import the library" - if you mean scan the drive and find music files, I don't think it will pick up the WAV files as they have no tag info. If your directory structure on the new PC w/ external drive is identical to your old PC, then you should be able to open a backup file of your library and everything would be there. If the directory structure is not identical, there are probably still ways to start in this manner and get all the files "reconnected".

I'm assuming you've already posted over on the JRiver forum for help. If not, you should - very helpful and knowledgeable.
Yes, WAV files are a problem because they are not tagged with information. What program were you using to manage music on your old PC? Kthomas is right - if you were using Jriver and you employ the exact same directory struture, and if you can copy the old library file over to your new PC, it should operate just like the old Jriver. The same is true for iTunes. One option, if you still have your old PC, is to convert all your WAV files to something tagged, like AIFF or FLAC or ALAC, and then bring them into your new PC. Then your music management software will be able to get at the song information for each track.
thanks for the input guys. have no idea what file structure even means so i'm assuming they are different from old pc to new pc.

peter: just started converting to FLAC on the old pc. will move them over and see what happens. looks like it's gonna take a long time to get them all converted (using j river. hoping your conversion idea works. i'd rather stick a rusty knife in my eye then re-rip all those disc's.

was using the same J River program (MC-15) on the old pc so i didn't foresee the WAV file problem. didn't know WAV files were tagless. could have easily ripped to FLAC had i known.

thanks again