Well all depends man, you said you would mainly d/l music files.
Well irc is not really tha best for that(unless lp release or remix like that), I would use that only for hard to find movie tv shows or recent lp.
I would try Ares(napster clone) for music only, hashing is really annoying though so no movies.
Movies would be bittorrent and emule(also good for LP's), try to catch movies when just released cause you can get reaal fast in bittorent and real sloow in emule.
And when you got a good roster of files you should try dc++, you need files to get in the hubs, and lots of ops(sometimes gets annoying) making sure everybody shares. Best all around file sharer IMO.
everything you stated could be got from all these different p2p's and such all originally comes from IRC, then trickles down to the p2p's. yet none of those clients even come close to comparing to the transfer speeds and wide availability on IRC. If ou get better speeds from bit torrents or any form of p2p, you're not hitting the right IRC channels.
funny i didn't even mention speed. But yeah Irc is probably the fastest(bittorent comes very close second), but as far everything trickling down from irc I don't know about that 1(most likely to release it first true).
But I far as searching it for music, if didn't come out in the last 2 yrs you're lucky(plus not a good idea to to find it. individual music files are better to try to find them on ares or dc++(when you get some files of course).
And note really newbie friendly (not to say it's hard, but it norm "search and find" p2p's likely use to, but if it's new you can't find it IRC efnet rocks!)
If your looking to download music,movies,or pictures,GO TO WinMX.com,its free!!!! any music file u want! its fast as hell too. so get over there and download it.
DC++ I Downloaded that yesterday and it looks truly stunning I found a hub to get on so I did I was privilidged enuff to join one that I have great intrest in only thing is I CANNOT do a search either thru files or by searching ppl's is there a reason for this??......I run peerguardian and norton 24/7 but open the ports selected to allow access to dc++ any advice would be most welcome as ever
::LivE ForeveR OR DiE TryiN!!::....::DonT FinD US WE WilL FinD YoU::..
ChecK OuT ThE PenguiN GamE AnD PosT YouR HighesT DistancE ON ThE ForuM
http://www.gazholland.co.uk