Custom Soundset Issue(s)

1. I have a set of working .wavs that worked (sound-wise) as sounds on Windows Media Player. So I found an unused soundset (Kael's) and did Replace Internal Sound for all of them with my own. Then I set the custom unit's soundset to Kaels.

However, it was completely silent. Nothing played. I wish I had more info to give, but that's all that happened.
What's worse is I've already imported a custom sound (the beta Wc3 Orc Lumbermill 'cutting lumber' sound, as the ElvenGuardTowerWhat1 sound), and that works fine. Help?

2. After doing the aforementioned imports, I had bumped my custom map up from ~2000 kbs to ~4000 kbs. I'd really love to have the soundset; it sounds neat and fits the unit well. But there's no way in heck that I'll have such a large map; I'll never get to upload it or anything. So isn't there anyway of reducing the file-size of these sounds, or importing them all at once to save space, or... I don't know, something?

~BUMP~

Just use MP3s at 160 kbps. Simpler and cheaper size-wise. It's that one step above 128 kbps and it gives off a tad more size but keeps that slight bit of quality if that's what you're after.

Quick tutorial on sound compression, haven't read it in depth. (It mentions how you can use mp3 files but use the wav suffix in the import editor to bypass some of WC3's defaults)
http://www.wc3campaigns.net/showthread.php?t=96358

Despite what people say, when it comes to video games - unless you're making a godly quality cinematic, MP3s are better than Wavs size-wise. Why? Because Wavs are - on average - around 30 or more times larger than MP3s.

Well if none of that works/answered your question, get some sort of sound editing program - open the working sound file and try to match all of the imports with the statistics it has.

Hmm... Yeah. Thanks for the help; I will have to check out that sound compression stuff. That may be what I need for Question2.

However, that doesn't exactly solve the mysterious "no-sounds" soundsets. Is that what you meant by ??

Like, does it have the same bit rate... is its bitrate variable or nonvariable... stuff like that.

I've no clue