Is there an app that will allow you to make playlists with your music (on your computer) and then transfer those playlists, and the associated MP3 files, over to the phone? I'd prefer not to have to "Sync" stuff because of all the headaches that syncing carries with it, but I just don't see anything in the market that has this functionality.

I have an HTC Droid Incredible running Android 2.2 FroYo and would like to use custom sounds/songs as ringtones for text message notifications, event and task reminders, Facebook and Twitter notifications, and email messages. I have the MP3s that I want to use located in the /ringtones directory of my phone, but they don't show up on the list of possible sound effects/tones/notifications, but they do show up in the selection for incoming call ringtones. What do I do to …

Possible Duplicate: Are there any devices that are like an iPod Touch, but run Android? In other words, is there a piece of dedicated hardware designed (or shipped with) Android that is meant as a media player, so that I wouldn't have to pay for a phone, and just not use the phone features?