Log Message:
Update to 1.5.0. From the changelog:

- Added support for Rio Nitrus.
- Updated mp3 and id3 parsers.
- Removed macosx and usbdevfs drivers. libusb is now the standard driver.
- Several small bugfixes.

pkgsrc patches for DragonFly carried forward. Builds and runs on
OS X but untested (I haven't had a Rio for years). 1.4.7 was broken
in Krister's NetBSD 4.0_BETA2/i386 bulk build; perhaps this will
help.